84386457 has 12 divisors (see below), whose sum is σ = 123435520. Its totient is φ = 55545048.

The previous prime is 84386431. The next prime is 84386527. The reversal of 84386457 is 75468348.

It is not a de Polignac number, because 84386457 - 2²² = 80192153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84386257) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58633 + ... + 60054.

Almost surely, 2^84386457 is an apocalyptic number.

It is an amenable number.

84386457 is a deficient number, since it is larger than the sum of its proper divisors (39049063).

84386457 is a wasteful number, since it uses less digits than its factorization.

84386457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118772 (or 118769 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 84386457 is about 9186.2101543564. The cubic root of 84386457 is about 438.6225119645.

The spelling of 84386457 in words is "eighty-four million, three hundred eighty-six thousand, four hundred fifty-seven".