98978871 has 4 divisors (see below), whose sum is σ = 131971832. Its totient is φ = 65985912.

The previous prime is 98978861. The next prime is 98978881. The reversal of 98978871 is 17887989.

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

It is an interprime number because it is at equal distance from previous prime (98978861) and next prime (98978881).

It is not a de Polignac number, because 98978871 - 2⁶ = 98978807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98978861) 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, 16496476 + ... + 16496481.

It is an arithmetic number, because the mean of its divisors is an integer number (32992958).

Almost surely, 2^98978871 is an apocalyptic number.

98978871 is a deficient number, since it is larger than the sum of its proper divisors (32992961).

98978871 is a wasteful number, since it uses less digits than its factorization.

98978871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32992960.

The product of its digits is 2032128, while the sum is 57.

The square root of 98978871 is about 9948.8125422082. The cubic root of 98978871 is about 462.5735880960.

The spelling of 98978871 in words is "ninety-eight million, nine hundred seventy-eight thousand, eight hundred seventy-one".