84779074 has 4 divisors (see below), whose sum is σ = 127168614. Its totient is φ = 42389536.

The previous prime is 84779069. The next prime is 84779077. The reversal of 84779074 is 47097748.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 76685049 + 8094025 = 8757^2 + 2845^2 .

It is not an unprimeable number, because it can be changed into a prime (84779077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21194767 + ... + 21194770.

Almost surely, 2^84779074 is an apocalyptic number.

84779074 is a deficient number, since it is larger than the sum of its proper divisors (42389540).

84779074 is a wasteful number, since it uses less digits than its factorization.

84779074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42389539.

The product of its (nonzero) digits is 395136, while the sum is 46.

The square root of 84779074 is about 9207.5552672791. Note that the first 3 decimals coincide. The cubic root of 84779074 is about 439.3017057315.

The spelling of 84779074 in words is "eighty-four million, seven hundred seventy-nine thousand, seventy-four".