40844157 has 16 divisors (see below), whose sum is σ = 55460928. Its totient is φ = 26732160.

The previous prime is 40844137. The next prime is 40844171. The reversal of 40844157 is 75144804.

It is not a de Polignac number, because 40844157 - 2²² = 36649853 is a prime.

It is a super-2 number, since 2×40844157² = 3336490322081298, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40844137) 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, 91978 + ... + 92420.

It is an arithmetic number, because the mean of its divisors is an integer number (3466308).

Almost surely, 2^40844157 is an apocalyptic number.

It is an amenable number.

40844157 is a deficient number, since it is larger than the sum of its proper divisors (14616771).

40844157 is a wasteful number, since it uses less digits than its factorization.

40844157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940.

The product of its (nonzero) digits is 17920, while the sum is 33.

The square root of 40844157 is about 6390.9433575960. The cubic root of 40844157 is about 344.3842745824.

The spelling of 40844157 in words is "forty million, eight hundred forty-four thousand, one hundred fifty-seven".