84779474 has 8 divisors (see below), whose sum is σ = 136951500. Its totient is φ = 39128976.

The previous prime is 84779473. The next prime is 84779477. The reversal of 84779474 is 47497748.

It can be written as a sum of positive squares in 2 ways, for example, as 75568249 + 9211225 = 8693^2 + 3035^2 .

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

It is not an unprimeable number, because it can be changed into a prime (84779473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1630349 + ... + 1630400.

Almost surely, 2^84779474 is an apocalyptic number.

84779474 is a deficient number, since it is larger than the sum of its proper divisors (52172026).

84779474 is a wasteful number, since it uses less digits than its factorization.

84779474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3260764.

The product of its digits is 1580544, while the sum is 50.

The square root of 84779474 is about 9207.5769885459. The cubic root of 84779474 is about 439.3023966268.

The spelling of 84779474 in words is "eighty-four million, seven hundred seventy-nine thousand, four hundred seventy-four".