40293621 has 24 divisors (see below), whose sum is σ = 62800920. Its totient is φ = 24800256.

The previous prime is 40293601. The next prime is 40293679. The reversal of 40293621 is 12639204.

It can be written as a sum of positive squares in 4 ways, for example, as 9090225 + 31203396 = 3015^2 + 5586^2 .

It is not a de Polignac number, because 40293621 - 2⁹ = 40293109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40293601) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5625 + ... + 10593.

It is an arithmetic number, because the mean of its divisors is an integer number (2616705).

Almost surely, 2^40293621 is an apocalyptic number.

It is an amenable number.

40293621 is a deficient number, since it is larger than the sum of its proper divisors (22507299).

40293621 is a wasteful number, since it uses less digits than its factorization.

40293621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5045 (or 5042 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 40293621 is about 6347.7256556975. The cubic root of 40293621 is about 342.8299581869.

The spelling of 40293621 in words is "forty million, two hundred ninety-three thousand, six hundred twenty-one".