747742869 has 12 divisors (see below), whose sum is σ = 1094869516. Its totient is φ = 491666112.

The previous prime is 747742843. The next prime is 747742907. The reversal of 747742869 is 968247747.

It can be written as a sum of positive squares in 2 ways, for example, as 212051844 + 535691025 = 14562^2 + 23145^2 .

It is not a de Polignac number, because 747742869 - 2⁵ = 747742837 is a prime.

It is a super-2 number, since 2×747742869² = 1118238796280702322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (747742069) 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, 568402 + ... + 569715.

Almost surely, 2^747742869 is an apocalyptic number.

It is an amenable number.

747742869 is a deficient number, since it is larger than the sum of its proper divisors (347126647).

747742869 is a wasteful number, since it uses less digits than its factorization.

747742869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1138196 (or 1138193 counting only the distinct ones).

The product of its digits is 4741632, while the sum is 54.

The square root of 747742869 is about 27344.8874380569. The cubic root of 747742869 is about 907.6479407290.

The spelling of 747742869 in words is "seven hundred forty-seven million, seven hundred forty-two thousand, eight hundred sixty-nine".