83907897 has 16 divisors (see below), whose sum is σ = 115167360. Its totient is φ = 54300672.

The previous prime is 83907893. The next prime is 83907899. The reversal of 83907897 is 79870938.

It is a happy number.

It is not a de Polignac number, because 83907897 - 2² = 83907893 is a prime.

It is not an unprimeable number, because it can be changed into a prime (83907893) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84868 + ... + 85850.

It is an arithmetic number, because the mean of its divisors is an integer number (7197960).

Almost surely, 2^83907897 is an apocalyptic number.

It is an amenable number.

83907897 is a deficient number, since it is larger than the sum of its proper divisors (31259463).

83907897 is a wasteful number, since it uses less digits than its factorization.

83907897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1792.

The product of its (nonzero) digits is 762048, while the sum is 51.

The square root of 83907897 is about 9160.1253812380. The cubic root of 83907897 is about 437.7917892400.

The spelling of 83907897 in words is "eighty-three million, nine hundred seven thousand, eight hundred ninety-seven".