98699391 has 40 divisors (see below), whose sum is σ = 170155040. Its totient is φ = 55847232.

The previous prime is 98699369. The next prime is 98699407. The reversal of 98699391 is 19399689.

It is not a de Polignac number, because 98699391 - 2⁶ = 98699327 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 (98699191) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 61005 + ... + 62601.

It is an arithmetic number, because the mean of its divisors is an integer number (4253876).

Almost surely, 2^98699391 is an apocalyptic number.

98699391 is a deficient number, since it is larger than the sum of its proper divisors (71455649).

98699391 is a wasteful number, since it uses less digits than its factorization.

98699391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1725 (or 1716 counting only the distinct ones).

The product of its digits is 944784, while the sum is 54.

The square root of 98699391 is about 9934.7567156926. The cubic root of 98699391 is about 462.1377983288.

The spelling of 98699391 in words is "ninety-eight million, six hundred ninety-nine thousand, three hundred ninety-one".