40441947 has 16 divisors (see below), whose sum is σ = 66366720. Its totient is φ = 21331872.

The previous prime is 40441931. The next prime is 40441957. The reversal of 40441947 is 74914404.

It is not a de Polignac number, because 40441947 - 2⁴ = 40441931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40441957) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73797 + ... + 74342.

It is an arithmetic number, because the mean of its divisors is an integer number (4147920).

Almost surely, 2^40441947 is an apocalyptic number.

40441947 is a deficient number, since it is larger than the sum of its proper divisors (25924773).

40441947 is a wasteful number, since it uses less digits than its factorization.

40441947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148162.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 40441947 is about 6359.3983205961. The cubic root of 40441947 is about 343.2501101162.

The spelling of 40441947 in words is "forty million, four hundred forty-one thousand, nine hundred forty-seven".