98972638 has 4 divisors (see below), whose sum is σ = 148458960. Its totient is φ = 49486318.

The previous prime is 98972633. The next prime is 98972639. The reversal of 98972638 is 83627989.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83627989 = 71 ⋅1177859.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98972633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24743158 + ... + 24743161.

It is an arithmetic number, because the mean of its divisors is an integer number (37114740).

Almost surely, 2^98972638 is an apocalyptic number.

98972638 is a deficient number, since it is larger than the sum of its proper divisors (49486322).

98972638 is a wasteful number, since it uses less digits than its factorization.

98972638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49486321.

The product of its digits is 1306368, while the sum is 52.

The square root of 98972638 is about 9948.4992838116. The cubic root of 98972638 is about 462.5638780045.

It can be divided in two parts, 98972 and 638, that multiplied together give a palindrome (63144136).

The spelling of 98972638 in words is "ninety-eight million, nine hundred seventy-two thousand, six hundred thirty-eight".