40395938 has 32 divisors (see below), whose sum is σ = 70044480. Its totient is φ = 17280000.

The previous prime is 40395931. The next prime is 40395959. The reversal of 40395938 is 83959304.

It is a junction number, because it is equal to n+sod(n) for n = 40395895 and 40395904.

It is not an unprimeable number, because it can be changed into a prime (40395931) 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, 100538 + ... + 100938.

It is an arithmetic number, because the mean of its divisors is an integer number (2188890).

Almost surely, 2^40395938 is an apocalyptic number.

40395938 is a deficient number, since it is larger than the sum of its proper divisors (29648542).

40395938 is a wasteful number, since it uses less digits than its factorization.

40395938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 40395938 is about 6355.7798892032. The cubic root of 40395938 is about 343.1198939412.

The spelling of 40395938 in words is "forty million, three hundred ninety-five thousand, nine hundred thirty-eight".