84797487 has 6 divisors (see below), whose sum is σ = 122485272. Its totient is φ = 56531652.

The previous prime is 84797483. The next prime is 84797521. The reversal of 84797487 is 78479748.

It is not a de Polignac number, because 84797487 - 2² = 84797483 is a prime.

It is a super-2 number, since 2×84797487² = 14381227603030338, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84797483) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4710963 + ... + 4710980.

It is an arithmetic number, because the mean of its divisors is an integer number (20414212).

Almost surely, 2^84797487 is an apocalyptic number.

84797487 is a deficient number, since it is larger than the sum of its proper divisors (37687785).

84797487 is a wasteful number, since it uses less digits than its factorization.

84797487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9421949 (or 9421946 counting only the distinct ones).

The product of its digits is 3161088, while the sum is 54.

The square root of 84797487 is about 9208.5550983854. Note that the first 3 decimals coincide. The cubic root of 84797487 is about 439.3335071199. Note that the first 3 decimals are identical.

The spelling of 84797487 in words is "eighty-four million, seven hundred ninety-seven thousand, four hundred eighty-seven".