39897078 has 32 divisors (see below), whose sum is σ = 87768576. Its totient is φ = 12013728.

The previous prime is 39897061. The next prime is 39897083. The reversal of 39897078 is 87079893.

It is a happy number.

It is a super-3 number, since 3×39897078³ (a number of 24 digits) contains 333 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 39897078.

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, 1776 + ... + 9107.

It is an arithmetic number, because the mean of its divisors is an integer number (2742768).

Almost surely, 2^39897078 is an apocalyptic number.

39897078 is an abundant number, since it is smaller than the sum of its proper divisors (47871498).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39897078 is a wasteful number, since it uses less digits than its factorization.

39897078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10948.

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

The square root of 39897078 is about 6316.4133810257. The cubic root of 39897078 is about 341.7016138224.

The spelling of 39897078 in words is "thirty-nine million, eight hundred ninety-seven thousand, seventy-eight".