40449740 has 12 divisors (see below), whose sum is σ = 84944496. Its totient is φ = 16179888.

The previous prime is 40449737. The next prime is 40449743. The reversal of 40449740 is 4794404.

40449740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (40449737) and next prime (40449743).

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 40449697 and 40449706.

It is not an unprimeable number, because it can be changed into a prime (40449743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1011224 + ... + 1011263.

It is an arithmetic number, because the mean of its divisors is an integer number (7078708).

Almost surely, 2^40449740 is an apocalyptic number.

It is an amenable number.

40449740 is an abundant number, since it is smaller than the sum of its proper divisors (44494756).

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

40449740 is a wasteful number, since it uses less digits than its factorization.

40449740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2022496 (or 2022494 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 40449740 is about 6360.0110062798. The cubic root of 40449740 is about 343.2721563373.

The spelling of 40449740 in words is "forty million, four hundred forty-nine thousand, seven hundred forty".