40332397 has 16 divisors (see below), whose sum is σ = 47779200. Its totient is φ = 33327360.

The previous prime is 40332377. The next prime is 40332419. The reversal of 40332397 is 79323304.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40332397 is a prime.

It is a nialpdrome in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40332377) 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, 24754 + ... + 26332.

It is an arithmetic number, because the mean of its divisors is an integer number (2986200).

Almost surely, 2^40332397 is an apocalyptic number.

It is an amenable number.

40332397 is a deficient number, since it is larger than the sum of its proper divisors (7446803).

40332397 is a wasteful number, since it uses less digits than its factorization.

40332397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1716.

The product of its (nonzero) digits is 13608, while the sum is 31.

The square root of 40332397 is about 6350.7792435259. The cubic root of 40332397 is about 342.9398954599.

The spelling of 40332397 in words is "forty million, three hundred thirty-two thousand, three hundred ninety-seven".