40056621 has 8 divisors (see below), whose sum is σ = 58264224. Its totient is φ = 24276720.

The previous prime is 40056613. The next prime is 40056629. The reversal of 40056621 is 12665004.

It is an interprime number because it is at equal distance from previous prime (40056613) and next prime (40056629).

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

It is not a de Polignac number, because 40056621 - 2³ = 40056613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40056591 and 40056600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40056629) 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, 606886 + ... + 606951.

It is an arithmetic number, because the mean of its divisors is an integer number (7283028).

Almost surely, 2^40056621 is an apocalyptic number.

It is an amenable number.

40056621 is a deficient number, since it is larger than the sum of its proper divisors (18207603).

40056621 is a wasteful number, since it uses less digits than its factorization.

40056621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1213851.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 40056621 is about 6329.0300204692. The cubic root of 40056621 is about 342.1564808353.

The spelling of 40056621 in words is "forty million, fifty-six thousand, six hundred twenty-one".