44863621 has 4 divisors (see below), whose sum is σ = 48942144. Its totient is φ = 40785100.

The previous prime is 44863613. The next prime is 44863633. The reversal of 44863621 is 12636844.

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 44863621 - 2³ = 44863613 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 (44863661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2039245 + ... + 2039266.

It is an arithmetic number, because the mean of its divisors is an integer number (12235536).

Almost surely, 2^44863621 is an apocalyptic number.

It is an amenable number.

44863621 is a deficient number, since it is larger than the sum of its proper divisors (4078523).

44863621 is a wasteful number, since it uses less digits than its factorization.

44863621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4078522.

The product of its digits is 27648, while the sum is 34.

The square root of 44863621 is about 6698.0311286228. The cubic root of 44863621 is about 355.3296442125.

The spelling of 44863621 in words is "forty-four million, eight hundred sixty-three thousand, six hundred twenty-one".