78746479 has 24 divisors (see below), whose sum is σ = 96657408. Its totient is φ = 63871920.

The previous prime is 78746467. The next prime is 78746483. The reversal of 78746479 is 97464787.

78746479 = T₁₈₀₇ + T₁₈₀₈ + ... + T₁₈₅₃.

It is a de Polignac number, because none of the positive numbers 2^k-78746479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78746449) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 70842 + ... + 71944.

It is an arithmetic number, because the mean of its divisors is an integer number (4027392).

Almost surely, 2^78746479 is an apocalyptic number.

78746479 is a deficient number, since it is larger than the sum of its proper divisors (17910929).

78746479 is a wasteful number, since it uses less digits than its factorization.

78746479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1195 (or 1188 counting only the distinct ones).

The product of its digits is 2370816, while the sum is 52.

The square root of 78746479 is about 8873.9212865565. The cubic root of 78746479 is about 428.6245558319.

The spelling of 78746479 in words is "seventy-eight million, seven hundred forty-six thousand, four hundred seventy-nine".