40413931 has 16 divisors (see below), whose sum is σ = 44064000. Its totient is φ = 36942048.

The previous prime is 40413889. The next prime is 40413941. The reversal of 40413931 is 13931404.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 40413931 - 2¹¹ = 40411883 is a prime.

It is a super-2 number, since 2×40413931² = 3266571637745522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40413896 and 40413905.

It is not an unprimeable number, because it can be changed into a prime (40413941) 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, 67170 + ... + 67768.

It is an arithmetic number, because the mean of its divisors is an integer number (2754000).

Almost surely, 2^40413931 is an apocalyptic number.

40413931 is a deficient number, since it is larger than the sum of its proper divisors (3650069).

40413931 is a wasteful number, since it uses less digits than its factorization.

40413931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 40413931 is about 6357.1952148727. The cubic root of 40413931 is about 343.1708300844.

The spelling of 40413931 in words is "forty million, four hundred thirteen thousand, nine hundred thirty-one".