40813757 has 4 divisors (see below), whose sum is σ = 40858620. Its totient is φ = 40768896.

The previous prime is 40813741. The next prime is 40813769. The reversal of 40813757 is 75731804.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1136356 + 39677401 = 1066^2 + 6299^2 .

It is a cyclic number.

It is not a de Polignac number, because 40813757 - 2⁴ = 40813741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40813777) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21038 + ... + 22895.

It is an arithmetic number, because the mean of its divisors is an integer number (10214655).

Almost surely, 2^40813757 is an apocalyptic number.

It is an amenable number.

40813757 is a deficient number, since it is larger than the sum of its proper divisors (44863).

40813757 is an equidigital number, since it uses as much as digits as its factorization.

40813757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44862.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 40813757 is about 6388.5645492552. The cubic root of 40813757 is about 344.2988124976.

The spelling of 40813757 in words is "forty million, eight hundred thirteen thousand, seven hundred fifty-seven".