70442449 has 27 divisors (see below), whose sum is σ = 90903771. Its totient is φ = 54386640.

The previous prime is 70442431. The next prime is 70442503. The reversal of 70442449 is 94424407.

The square root of 70442449 is 8393.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 49098049 + 21344400 = 7007^2 + 4620^2 .

It is not a de Polignac number, because 70442449 - 2⁹ = 70441937 is a prime.

It is a super-2 number, since 2×70442449² = 9924277242235202, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (70442429) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 646207 + ... + 646315.

Almost surely, 2^70442449 is an apocalyptic number.

70442449 is the 8393-rd square number.

70442449 is the 4197-th centered octagonal number.

It is an amenable number.

70442449 is a deficient number, since it is larger than the sum of its proper divisors (20461322).

70442449 is a wasteful number, since it uses less digits than its factorization.

70442449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254 (or 127 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 34.

The cubic root of 70442449 is about 412.9950205279.

The spelling of 70442449 in words is "seventy million, four hundred forty-two thousand, four hundred forty-nine".