44664649 has 4 divisors (see below), whose sum is σ = 47015440. Its totient is φ = 42313860.

The previous prime is 44664647. The next prime is 44664667. The reversal of 44664649 is 94646644.

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 44664649 - 2¹ = 44664647 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44664647) 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, 1175367 + ... + 1175404.

It is an arithmetic number, because the mean of its divisors is an integer number (11753860).

Almost surely, 2^44664649 is an apocalyptic number.

It is an amenable number.

44664649 is a deficient number, since it is larger than the sum of its proper divisors (2350791).

44664649 is a wasteful number, since it uses less digits than its factorization.

44664649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2350790.

The product of its digits is 497664, while the sum is 43.

The square root of 44664649 is about 6683.1616021162. The cubic root of 44664649 is about 354.8035651995.

The spelling of 44664649 in words is "forty-four million, six hundred sixty-four thousand, six hundred forty-nine".