478518098 has 4 divisors (see below), whose sum is σ = 717777150. Its totient is φ = 239259048.

The previous prime is 478518071. The next prime is 478518101. The reversal of 478518098 is 890815874.

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., 239413729 + 239104369 = 15473^2 + 15463^2 .

It is a super-2 number, since 2×478518098² = 457959140227075208, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119629523 + ... + 119629526.

Almost surely, 2^478518098 is an apocalyptic number.

478518098 is a deficient number, since it is larger than the sum of its proper divisors (239259052).

478518098 is a wasteful number, since it uses less digits than its factorization.

478518098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239259051.

The product of its (nonzero) digits is 645120, while the sum is 50.

The square root of 478518098 is about 21875.0565256413. The cubic root of 478518098 is about 782.1669406348.

The spelling of 478518098 in words is "four hundred seventy-eight million, five hundred eighteen thousand, ninety-eight".