749387457 has 48 divisors (see below), whose sum is σ = 1381627520. Its totient is φ = 395269632.

The previous prime is 749387453. The next prime is 749387461. The reversal of 749387457 is 754783947.

It is an interprime number because it is at equal distance from previous prime (749387453) and next prime (749387461).

It is not a de Polignac number, because 749387457 - 2² = 749387453 is a prime.

It is not an unprimeable number, because it can be changed into a prime (749387453) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5169 + ... + 39057.

Almost surely, 2^749387457 is an apocalyptic number.

It is an amenable number.

749387457 is a deficient number, since it is larger than the sum of its proper divisors (632240063).

749387457 is a wasteful number, since it uses less digits than its factorization.

749387457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33924 (or 33912 counting only the distinct ones).

The product of its digits is 5927040, while the sum is 54.

The square root of 749387457 is about 27374.9421369251. The cubic root of 749387457 is about 908.3128813807.

The spelling of 749387457 in words is "seven hundred forty-nine million, three hundred eighty-seven thousand, four hundred fifty-seven".