98797978 has 8 divisors (see below), whose sum is σ = 150708960. Its totient is φ = 48561660.

The previous prime is 98797969. The next prime is 98798009. The reversal of 98797978 is 87979789.

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

It is a super-2 number, since 2×98797978² = 19522080913776968, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 418518 + ... + 418753.

It is an arithmetic number, because the mean of its divisors is an integer number (18838620).

Almost surely, 2^98797978 is an apocalyptic number.

98797978 is a deficient number, since it is larger than the sum of its proper divisors (51910982).

98797978 is a wasteful number, since it uses less digits than its factorization.

98797978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 837332.

The product of its digits is 16003008, while the sum is 64.

The square root of 98797978 is about 9939.7171991964. The cubic root of 98797978 is about 462.2916176430.

The spelling of 98797978 in words is "ninety-eight million, seven hundred ninety-seven thousand, nine hundred seventy-eight".