40472621 has 4 divisors (see below), whose sum is σ = 46254432. Its totient is φ = 34690812.

The previous prime is 40472611. The next prime is 40472657. The reversal of 40472621 is 12627404.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40472621 - 2⁶ = 40472557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40472611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2890895 + ... + 2890908.

It is an arithmetic number, because the mean of its divisors is an integer number (11563608).

Almost surely, 2^40472621 is an apocalyptic number.

It is an amenable number.

40472621 is a deficient number, since it is larger than the sum of its proper divisors (5781811).

40472621 is an equidigital number, since it uses as much as digits as its factorization.

40472621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5781810.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 40472621 is about 6361.8095696115. The cubic root of 40472621 is about 343.3368698120.

The spelling of 40472621 in words is "forty million, four hundred seventy-two thousand, six hundred twenty-one".