78769474 has 8 divisors (see below), whose sum is σ = 135033408. Its totient is φ = 33758340.

The previous prime is 78769463. The next prime is 78769477. The reversal of 78769474 is 47496787.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an alternating number because its digits alternate between odd and even.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (78769477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2813182 + ... + 2813209.

It is an arithmetic number, because the mean of its divisors is an integer number (16879176).

Almost surely, 2^78769474 is an apocalyptic number.

78769474 is a deficient number, since it is larger than the sum of its proper divisors (56263934).

78769474 is a wasteful number, since it uses less digits than its factorization.

78769474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5626400.

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

The square root of 78769474 is about 8875.2168424214. The cubic root of 78769474 is about 428.6662730936. Note that the first 3 decimals are identical.

The spelling of 78769474 in words is "seventy-eight million, seven hundred sixty-nine thousand, four hundred seventy-four".