40613994 has 16 divisors (see below), whose sum is σ = 90253440. Its totient is φ = 13537980.

The previous prime is 40613981. The next prime is 40614023. The reversal of 40613994 is 49931604.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 376002 + ... + 376109.

It is an arithmetic number, because the mean of its divisors is an integer number (5640840).

Almost surely, 2^40613994 is an apocalyptic number.

40613994 is an abundant number, since it is smaller than the sum of its proper divisors (49639446).

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

40613994 is a wasteful number, since it uses less digits than its factorization.

40613994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752122 (or 752116 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 40613994 is about 6372.9109518335. The cubic root of 40613994 is about 343.7361698458.

It can be divided in two parts, 406 and 13994, that added together give a square (14400 = 120²).

The spelling of 40613994 in words is "forty million, six hundred thirteen thousand, nine hundred ninety-four".