98970639 has 16 divisors (see below), whose sum is σ = 139171200. Its totient is φ = 62388576.

The previous prime is 98970637. The next prime is 98970691. The reversal of 98970639 is 93607989.

It is not a de Polignac number, because 98970639 - 2¹ = 98970637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 98970591 and 98970600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98970637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35892 + ... + 38550.

It is an arithmetic number, because the mean of its divisors is an integer number (8698200).

Almost surely, 2^98970639 is an apocalyptic number.

98970639 is the 5318-th nonagonal number.

98970639 is a deficient number, since it is larger than the sum of its proper divisors (40200561).

98970639 is a wasteful number, since it uses less digits than its factorization.

98970639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3334.

The product of its (nonzero) digits is 734832, while the sum is 51.

The square root of 98970639 is about 9948.3988158899. The cubic root of 98970639 is about 462.5607637720.

The spelling of 98970639 in words is "ninety-eight million, nine hundred seventy thousand, six hundred thirty-nine".