40990253 has 8 divisors (see below), whose sum is σ = 43205400. Its totient is φ = 38828608.

The previous prime is 40990249. The next prime is 40990259. The reversal of 40990253 is 35209904.

It can be written as a sum of positive squares in 4 ways, for example, as 23164969 + 17825284 = 4813^2 + 4222^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40990253 - 2² = 40990249 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 (40990259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11798 + ... + 14871.

It is an arithmetic number, because the mean of its divisors is an integer number (5400675).

Almost surely, 2^40990253 is an apocalyptic number.

It is an amenable number.

40990253 is a deficient number, since it is larger than the sum of its proper divisors (2215147).

40990253 is a wasteful number, since it uses less digits than its factorization.

40990253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26751.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 40990253 is about 6402.3630793637. The cubic root of 40990253 is about 344.7943968536.

The spelling of 40990253 in words is "forty million, nine hundred ninety thousand, two hundred fifty-three".