915455494 has 4 divisors (see below), whose sum is σ = 1373183244. Its totient is φ = 457727746.

The previous prime is 915455477. The next prime is 915455531. The reversal of 915455494 is 494554519.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 494554519 = 137 ⋅3609887.

It is a super-2 number, since 2×915455494² = 1676117522989568072, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 228863872 + ... + 228863875.

It is an arithmetic number, because the mean of its divisors is an integer number (343295811).

Almost surely, 2^915455494 is an apocalyptic number.

915455494 is a deficient number, since it is larger than the sum of its proper divisors (457727750).

915455494 is a wasteful number, since it uses less digits than its factorization.

915455494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457727749.

The product of its digits is 648000, while the sum is 46.

The square root of 915455494 is about 30256.4950713066. The cubic root of 915455494 is about 970.9847561159.

The spelling of 915455494 in words is "nine hundred fifteen million, four hundred fifty-five thousand, four hundred ninety-four".