98721974 has 32 divisors (see below), whose sum is σ = 165896640. Its totient is φ = 43747200.

The previous prime is 98721971. The next prime is 98721983. The reversal of 98721974 is 47912789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98721971) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 234284 + ... + 234704.

It is an arithmetic number, because the mean of its divisors is an integer number (5184270).

Almost surely, 2^98721974 is an apocalyptic number.

98721974 is a deficient number, since it is larger than the sum of its proper divisors (67174666).

98721974 is a wasteful number, since it uses less digits than its factorization.

98721974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776.

The product of its digits is 254016, while the sum is 47.

The square root of 98721974 is about 9935.8932160123. The cubic root of 98721974 is about 462.1730422546.

The spelling of 98721974 in words is "ninety-eight million, seven hundred twenty-one thousand, nine hundred seventy-four".