40772817 has 12 divisors (see below), whose sum is σ = 62358660. Its totient is φ = 25582848.

The previous prime is 40772789. The next prime is 40772861. The reversal of 40772817 is 71827704.

It can be written as a sum of positive squares in 2 ways, for example, as 24443136 + 16329681 = 4944^2 + 4041^2 .

It is not a de Polignac number, because 40772817 - 2⁸ = 40772561 is a prime.

It is a super-2 number, since 2×40772817² = 3324845212230978, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40772887) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 133092 + ... + 133397.

It is an arithmetic number, because the mean of its divisors is an integer number (5196555).

Almost surely, 2^40772817 is an apocalyptic number.

It is an amenable number.

40772817 is a deficient number, since it is larger than the sum of its proper divisors (21585843).

40772817 is a wasteful number, since it uses less digits than its factorization.

40772817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266512 (or 266509 counting only the distinct ones).

The product of its (nonzero) digits is 21952, while the sum is 36.

The square root of 40772817 is about 6385.3595826703. The cubic root of 40772817 is about 344.1836527238.

The spelling of 40772817 in words is "forty million, seven hundred seventy-two thousand, eight hundred seventeen".