83690438 has 32 divisors (see below), whose sum is σ = 139255200. Its totient is φ = 37483776.

The previous prime is 83690429. The next prime is 83690447. The reversal of 83690438 is 83409638.

It is an interprime number because it is at equal distance from previous prime (83690429) and next prime (83690447).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 83690395 and 83690404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136220 + ... + 136832.

It is an arithmetic number, because the mean of its divisors is an integer number (4351725).

Almost surely, 2^83690438 is an apocalyptic number.

83690438 is a deficient number, since it is larger than the sum of its proper divisors (55564762).

83690438 is a wasteful number, since it uses less digits than its factorization.

83690438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776.

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 83690438 is about 9148.2478103733. The cubic root of 83690438 is about 437.4132625872.

The spelling of 83690438 in words is "eighty-three million, six hundred ninety thousand, four hundred thirty-eight".