40490938 has 16 divisors (see below), whose sum is σ = 64110240. Its totient is φ = 19126800.

The previous prime is 40490927. The next prime is 40490939. The reversal of 40490938 is 83909404.

It is a junction number, because it is equal to n+sod(n) for n = 40490897 and 40490906.

It is not an unprimeable number, because it can be changed into a prime (40490939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14733 + ... + 17263.

It is an arithmetic number, because the mean of its divisors is an integer number (4006890).

Almost surely, 2^40490938 is an apocalyptic number.

40490938 is a deficient number, since it is larger than the sum of its proper divisors (23619302).

40490938 is a wasteful number, since it uses less digits than its factorization.

40490938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2973.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 40490938 is about 6363.2490128864. The cubic root of 40490938 is about 343.3886575209.

The spelling of 40490938 in words is "forty million, four hundred ninety thousand, nine hundred thirty-eight".