40111857 has 24 divisors (see below), whose sum is σ = 61593480. Its totient is φ = 25067520.

The previous prime is 40111853. The next prime is 40111867. The reversal of 40111857 is 75811104.

It can be written as a sum of positive squares in 4 ways, for example, as 29062881 + 11048976 = 5391^2 + 3324^2 .

It is not a de Polignac number, because 40111857 - 2² = 40111853 is a prime.

It is a super-2 number, since 2×40111857² = 3217922143976898, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40111857.

It is not an unprimeable number, because it can be changed into a prime (40111853) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62257 + ... + 62897.

It is an arithmetic number, because the mean of its divisors is an integer number (2566395).

Almost surely, 2^40111857 is an apocalyptic number.

It is an amenable number.

40111857 is a deficient number, since it is larger than the sum of its proper divisors (21481623).

40111857 is a wasteful number, since it uses less digits than its factorization.

40111857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1073 (or 1070 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 27.

The square root of 40111857 is about 6333.3922190245. The cubic root of 40111857 is about 342.3136806064.

The spelling of 40111857 in words is "forty million, one hundred eleven thousand, eight hundred fifty-seven".