40115944 has 16 divisors (see below), whose sum is σ = 82055520. Its totient is φ = 18234480.

The previous prime is 40115939. The next prime is 40115951. The reversal of 40115944 is 44951104.

It is a super-2 number, since 2×40115944² = 3218577926022272, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227844 + ... + 228019.

It is an arithmetic number, because the mean of its divisors is an integer number (5128470).

Almost surely, 2^40115944 is an apocalyptic number.

40115944 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

40115944 is an abundant number, since it is smaller than the sum of its proper divisors (41939576).

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

40115944 is a wasteful number, since it uses less digits than its factorization.

40115944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455880 (or 455876 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 40115944 is about 6333.7148657009. The cubic root of 40115944 is about 342.3253063334.

The spelling of 40115944 in words is "forty million, one hundred fifteen thousand, nine hundred forty-four".