78579454 has 12 divisors (see below), whose sum is σ = 123088104. Its totient is φ = 37552724.

The previous prime is 78579439. The next prime is 78579461. The reversal of 78579454 is 45497587.

It is a junction number, because it is equal to n+sod(n) for n = 78579398 and 78579407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 59469 + ... + 60775.

It is an arithmetic number, because the mean of its divisors is an integer number (10257342).

Almost surely, 2^78579454 is an apocalyptic number.

78579454 is a deficient number, since it is larger than the sum of its proper divisors (44508650).

78579454 is an equidigital number, since it uses as much as digits as its factorization.

78579454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2639 (or 1332 counting only the distinct ones).

The product of its digits is 1411200, while the sum is 49.

The square root of 78579454 is about 8864.5052879447. The cubic root of 78579454 is about 428.3212970151.

The spelling of 78579454 in words is "seventy-eight million, five hundred seventy-nine thousand, four hundred fifty-four".