40890357 has 6 divisors (see below), whose sum is σ = 59063862. Its totient is φ = 27260232.

The previous prime is 40890349. The next prime is 40890361. The reversal of 40890357 is 75309804.

It can be written as a sum of positive squares in only one way, i.e., 27973521 + 12916836 = 5289^2 + 3594^2 .

It is not a de Polignac number, because 40890357 - 2³ = 40890349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40890397) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2271678 + ... + 2271695.

It is an arithmetic number, because the mean of its divisors is an integer number (9843977).

Almost surely, 2^40890357 is an apocalyptic number.

It is an amenable number.

40890357 is a deficient number, since it is larger than the sum of its proper divisors (18173505).

40890357 is a wasteful number, since it uses less digits than its factorization.

40890357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4543379 (or 4543376 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 40890357 is about 6394.5568259263. The cubic root of 40890357 is about 344.5140733057.

The spelling of 40890357 in words is "forty million, eight hundred ninety thousand, three hundred fifty-seven".