40423964 has 12 divisors (see below), whose sum is σ = 80847984. Its totient is φ = 17324544.

The previous prime is 40423961. The next prime is 40423967. The reversal of 40423964 is 46932404.

It is an interprime number because it is at equal distance from previous prime (40423961) and next prime (40423967).

40423964 is an admirable number.

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 self number, because there is not a number n which added to its sum of digits gives 40423964.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40423961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 721829 + ... + 721884.

It is an arithmetic number, because the mean of its divisors is an integer number (6737332).

Almost surely, 2^40423964 is an apocalyptic number.

It is an amenable number.

40423964 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

40423964 is a wasteful number, since it uses less digits than its factorization.

40423964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1443724 (or 1443722 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 40423964 is about 6357.9842717641. The cubic root of 40423964 is about 343.1992258048.

The spelling of 40423964 in words is "forty million, four hundred twenty-three thousand, nine hundred sixty-four".