44307657 has 6 divisors (see below), whose sum is σ = 63999962. Its totient is φ = 29538432.

The previous prime is 44307631. The next prime is 44307667. The reversal of 44307657 is 75670344.

It can be written as a sum of positive squares in only one way, i.e., 34999056 + 9308601 = 5916^2 + 3051^2 .

It is not a de Polignac number, because 44307657 - 2¹⁵ = 44274889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44307617) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2461528 + ... + 2461545.

Almost surely, 2^44307657 is an apocalyptic number.

It is an amenable number.

44307657 is a deficient number, since it is larger than the sum of its proper divisors (19692305).

44307657 is a wasteful number, since it uses less digits than its factorization.

44307657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4923079 (or 4923076 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 36.

The square root of 44307657 is about 6656.3997025419. The cubic root of 44307657 is about 353.8557537372.

The spelling of 44307657 in words is "forty-four million, three hundred seven thousand, six hundred fifty-seven".