40479144 has 16 divisors (see below), whose sum is σ = 101197920. Its totient is φ = 13493040.

The previous prime is 40479143. The next prime is 40479151. The reversal of 40479144 is 44197404.

It is a super-2 number, since 2×40479144² = 3277122197945472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40479143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 843292 + ... + 843339.

It is an arithmetic number, because the mean of its divisors is an integer number (6324870).

Almost surely, 2^40479144 is an apocalyptic number.

It is an amenable number.

40479144 is an abundant number, since it is smaller than the sum of its proper divisors (60718776).

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

40479144 is a wasteful number, since it uses less digits than its factorization.

40479144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1686640 (or 1686636 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 40479144 is about 6362.3222175555. The cubic root of 40479144 is about 343.3553141005.

The spelling of 40479144 in words is "forty million, four hundred seventy-nine thousand, one hundred forty-four".