747478898 has 4 divisors (see below), whose sum is σ = 1121218350. Its totient is φ = 373739448.

The previous prime is 747478889. The next prime is 747478937. The reversal of 747478898 is 898874747.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 378185809 + 369293089 = 19447^2 + 19217^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 747478898.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 186869723 + ... + 186869726.

Almost surely, 2^747478898 is an apocalyptic number.

747478898 is a deficient number, since it is larger than the sum of its proper divisors (373739452).

747478898 is a wasteful number, since it uses less digits than its factorization.

747478898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373739451.

The product of its digits is 25288704, while the sum is 62.

The square root of 747478898 is about 27340.0603144909. The cubic root of 747478898 is about 907.5411210614.

The spelling of 747478898 in words is "seven hundred forty-seven million, four hundred seventy-eight thousand, eight hundred ninety-eight".