747662389 has 4 divisors (see below), whose sum is σ = 756063180. Its totient is φ = 739261600.

The previous prime is 747662387. The next prime is 747662401. The reversal of 747662389 is 983266747.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 983266747 = 61 ⋅16119127.

It can be written as a sum of positive squares in 2 ways, for example, as 202066225 + 545596164 = 14215^2 + 23358^2 .

It is a cyclic number.

It is not a de Polignac number, because 747662389 - 2¹ = 747662387 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (747662381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4200262 + ... + 4200439.

It is an arithmetic number, because the mean of its divisors is an integer number (189015795).

Almost surely, 2^747662389 is an apocalyptic number.

It is an amenable number.

747662389 is a deficient number, since it is larger than the sum of its proper divisors (8400791).

747662389 is an equidigital number, since it uses as much as digits as its factorization.

747662389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8400790.

The product of its digits is 3048192, while the sum is 52.

The square root of 747662389 is about 27343.4158253866. The cubic root of 747662389 is about 907.6153760020.

The spelling of 747662389 in words is "seven hundred forty-seven million, six hundred sixty-two thousand, three hundred eighty-nine".