40444947 has 8 divisors (see below), whose sum is σ = 59918480. Its totient is φ = 26963280.

The previous prime is 40444931. The next prime is 40444949. The reversal of 40444947 is 74944404.

It is not a de Polignac number, because 40444947 - 2⁴ = 40444931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40444949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 748954 + ... + 749007.

It is an arithmetic number, because the mean of its divisors is an integer number (7489810).

Almost surely, 2^40444947 is an apocalyptic number.

40444947 is a deficient number, since it is larger than the sum of its proper divisors (19473533).

40444947 is a wasteful number, since it uses less digits than its factorization.

40444947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1497970 (or 1497964 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

The square root of 40444947 is about 6359.6341875929. The cubic root of 40444947 is about 343.2585973837.

It can be divided in two parts, 404449 and 47, that added together give a square (404496 = 636²).

The spelling of 40444947 in words is "forty million, four hundred forty-four thousand, nine hundred forty-seven".