40423044 has 24 divisors (see below), whose sum is σ = 94614688. Its totient is φ = 13432320.

The previous prime is 40423001. The next prime is 40423057. The reversal of 40423044 is 44032404.

It is a self number, because there is not a number n which added to its sum of digits gives 40423044.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1117 + ... + 9060.

Almost surely, 2^40423044 is an apocalyptic number.

It is an amenable number.

40423044 is an abundant number, since it is smaller than the sum of its proper divisors (54191644).

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

40423044 is a wasteful number, since it uses less digits than its factorization.

40423044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10515 (or 10513 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 40423044 is about 6357.9119213780. The cubic root of 40423044 is about 343.1966221868.

Adding to 40423044 its reverse (44032404), we get a palindrome (84455448).

The spelling of 40423044 in words is "forty million, four hundred twenty-three thousand, forty-four".