40444957 has 16 divisors (see below), whose sum is σ = 47485440. Its totient is φ = 33729408.

The previous prime is 40444951. The next prime is 40444973. The reversal of 40444957 is 75944404.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 40444957 - 2³ = 40444949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40444951) 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 15 ways as a sum of consecutive naturals, for example, 88273 + ... + 88729.

It is an arithmetic number, because the mean of its divisors is an integer number (2967840).

Almost surely, 2^40444957 is an apocalyptic number.

40444957 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

It is an amenable number.

40444957 is a deficient number, since it is larger than the sum of its proper divisors (7040483).

40444957 is a wasteful number, since it uses less digits than its factorization.

40444957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 780.

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 40444957 is about 6359.6349738016. The cubic root of 40444957 is about 343.2586256739.

The spelling of 40444957 in words is "forty million, four hundred forty-four thousand, nine hundred fifty-seven".