44129457 has 12 divisors (see below), whose sum is σ = 67097680. Its totient is φ = 27871128.

The previous prime is 44129453. The next prime is 44129473. The reversal of 44129457 is 75492144.

It is a happy number.

It is not a de Polignac number, because 44129457 - 2² = 44129453 is a prime.

It is a super-2 number, since 2×44129457² = 3894817950229698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44129453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 128863 + ... + 129204.

Almost surely, 2^44129457 is an apocalyptic number.

It is an amenable number.

44129457 is a deficient number, since it is larger than the sum of its proper divisors (22968223).

44129457 is a wasteful number, since it uses less digits than its factorization.

44129457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258092 (or 258089 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 44129457 is about 6643.0006021376. Note that the first 3 decimals coincide. The cubic root of 44129457 is about 353.3807280872.

The spelling of 44129457 in words is "forty-four million, one hundred twenty-nine thousand, four hundred fifty-seven".