40890290493 has 16 divisors (see below), whose sum is σ = 60738894720. Its totient is φ = 24295556544.

The previous prime is 40890290479. The next prime is 40890290503. The reversal of 40890290493 is 39409209804.

It is not a de Polignac number, because 40890290493 - 2⁸ = 40890290237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40890290293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18075921 + ... + 18078182.

It is an arithmetic number, because the mean of its divisors is an integer number (3796180920).

Almost surely, 2^40890290493 is an apocalyptic number.

It is an amenable number.

40890290493 is a deficient number, since it is larger than the sum of its proper divisors (19848604227).

40890290493 is a wasteful number, since it uses less digits than its factorization.

40890290493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36154148.

The product of its (nonzero) digits is 559872, while the sum is 48.

The spelling of 40890290493 in words is "forty billion, eight hundred ninety million, two hundred ninety thousand, four hundred ninety-three".