120898639 has 4 divisors (see below), whose sum is σ = 120945640. Its totient is φ = 120851640.

The previous prime is 120898637. The next prime is 120898643. The reversal of 120898639 is 936898021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 120898639 - 2¹ = 120898637 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 (120898637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19404 + ... + 24865.

It is an arithmetic number, because the mean of its divisors is an integer number (30236410).

Almost surely, 2^120898639 is an apocalyptic number.

120898639 is a deficient number, since it is larger than the sum of its proper divisors (47001).

120898639 is an equidigital number, since it uses as much as digits as its factorization.

120898639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47000.

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 120898639 is about 10995.3917165329. The cubic root of 120898639 is about 494.4705954476.

The spelling of 120898639 in words is "one hundred twenty million, eight hundred ninety-eight thousand, six hundred thirty-nine".