44680639 has 2 divisors, whose sum is σ = 44680640. Its totient is φ = 44680638.

The previous prime is 44680633. The next prime is 44680661. The reversal of 44680639 is 93608644.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 44680639 - 2¹⁵ = 44647871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44680633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22340319 + 22340320.

It is an arithmetic number, because the mean of its divisors is an integer number (22340320).

Almost surely, 2^44680639 is an apocalyptic number.

44680639 is a deficient number, since it is larger than the sum of its proper divisors (1).

44680639 is an equidigital number, since it uses as much as digits as its factorization.

44680639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 44680639 is about 6684.3577851578. The cubic root of 44680639 is about 354.8459001874.

The spelling of 44680639 in words is "forty-four million, six hundred eighty thousand, six hundred thirty-nine".