78790498 has 4 divisors (see below), whose sum is σ = 118185750. Its totient is φ = 39395248.

The previous prime is 78790483. The next prime is 78790507. The reversal of 78790498 is 89409787.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89409787 = 967 ⋅92461.

It can be written as a sum of positive squares in only one way, i.e., 60326289 + 18464209 = 7767^2 + 4297^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19697623 + ... + 19697626.

Almost surely, 2^78790498 is an apocalyptic number.

78790498 is a deficient number, since it is larger than the sum of its proper divisors (39395252).

78790498 is a wasteful number, since it uses less digits than its factorization.

78790498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39395251.

The product of its (nonzero) digits is 1016064, while the sum is 52.

The square root of 78790498 is about 8876.4011851651. The cubic root of 78790498 is about 428.7044074858.

The spelling of 78790498 in words is "seventy-eight million, seven hundred ninety thousand, four hundred ninety-eight".