9139898 has 8 divisors (see below), whose sum is σ = 13722708. Its totient is φ = 4565664.

The previous prime is 9139883. The next prime is 9139927. The reversal of 9139898 is 8989319.

It can be written as a sum of positive squares in 2 ways, for example, as 9138529 + 1369 = 3023^2 + 37^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2840 + ... + 5132.

Almost surely, 2^9139898 is an apocalyptic number.

9139898 is a deficient number, since it is larger than the sum of its proper divisors (4582810).

9139898 is a wasteful number, since it uses less digits than its factorization.

9139898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4288.

The product of its digits is 139968, while the sum is 47.

The square root of 9139898 is about 3023.2264222185. The cubic root of 9139898 is about 209.0806218116.

The spelling of 9139898 in words is "nine million, one hundred thirty-nine thousand, eight hundred ninety-eight".