79854890 has 8 divisors (see below), whose sum is σ = 143738820. Its totient is φ = 31941952.

The previous prime is 79854877. The next prime is 79854937. The reversal of 79854890 is 9845897.

It can be written as a sum of positive squares in 2 ways, for example, as 69672409 + 10182481 = 8347^2 + 3191^2 .

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

It is an unprimeable number.

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, 3992735 + ... + 3992754.

Almost surely, 2^79854890 is an apocalyptic number.

79854890 is a deficient number, since it is larger than the sum of its proper divisors (63883930).

79854890 is a wasteful number, since it uses less digits than its factorization.

79854890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7985496.

The product of its (nonzero) digits is 725760, while the sum is 50.

The square root of 79854890 is about 8936.1563325627. The cubic root of 79854890 is about 430.6262553126.

The spelling of 79854890 in words is "seventy-nine million, eight hundred fifty-four thousand, eight hundred ninety".