70979489 has 12 divisors (see below), whose sum is σ = 82935684. Its totient is φ = 60568704.

The previous prime is 70979483. The next prime is 70979549. The reversal of 70979489 is 98497907.

It can be written as a sum of positive squares in 2 ways, for example, as 32947600 + 38031889 = 5740^2 + 6167^2 .

It is a de Polignac number, because none of the positive numbers 2^k-70979489 is a prime.

It is a super-2 number, since 2×70979489² = 10076175717402242, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 70979489.

It is not an unprimeable number, because it can be changed into a prime (70979483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8309 + ... + 14525.

It is an arithmetic number, because the mean of its divisors is an integer number (6911307).

Almost surely, 2^70979489 is an apocalyptic number.

It is an amenable number.

70979489 is a deficient number, since it is larger than the sum of its proper divisors (11956195).

70979489 is a wasteful number, since it uses less digits than its factorization.

70979489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6464 (or 6457 counting only the distinct ones).

The product of its (nonzero) digits is 1143072, while the sum is 53.

The square root of 70979489 is about 8424.9325813326. The cubic root of 70979489 is about 414.0418967767.

The spelling of 70979489 in words is "seventy million, nine hundred seventy-nine thousand, four hundred eighty-nine".