98779439 has 24 divisors (see below), whose sum is σ = 112671216. Its totient is φ = 86486400.

The previous prime is 98779427. The next prime is 98779459. The reversal of 98779439 is 93497789.

It is a de Polignac number, because none of the positive numbers 2^k-98779439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98779459) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 468044 + ... + 468254.

It is an arithmetic number, because the mean of its divisors is an integer number (4694634).

Almost surely, 2^98779439 is an apocalyptic number.

98779439 is a deficient number, since it is larger than the sum of its proper divisors (13891777).

98779439 is a wasteful number, since it uses less digits than its factorization.

98779439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359 (or 348 counting only the distinct ones).

The product of its digits is 3429216, while the sum is 56.

The square root of 98779439 is about 9938.7845836400. The cubic root of 98779439 is about 462.2627001807.

The spelling of 98779439 in words is "ninety-eight million, seven hundred seventy-nine thousand, four hundred thirty-nine".