98045978 has 4 divisors (see below), whose sum is σ = 147068970. Its totient is φ = 49022988.

The previous prime is 98045939. The next prime is 98045989. The reversal of 98045978 is 87954089.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87954089 = 439 ⋅200351.

It can be written as a sum of positive squares in only one way, i.e., 73908409 + 24137569 = 8597^2 + 4913^2 .

It is a super-2 number, since 2×98045978² = 19226027603952968, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24511493 + ... + 24511496.

Almost surely, 2^98045978 is an apocalyptic number.

98045978 is a deficient number, since it is larger than the sum of its proper divisors (49022992).

98045978 is a wasteful number, since it uses less digits than its factorization.

98045978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49022991.

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

The square root of 98045978 is about 9901.8169039828. The cubic root of 98045978 is about 461.1157195112.

The spelling of 98045978 in words is "ninety-eight million, forty-five thousand, nine hundred seventy-eight".