8898949391 has 4 divisors (see below), whose sum is σ = 9011594400. Its totient is φ = 8786304384.

The previous prime is 8898949369. The next prime is 8898949399. The reversal of 8898949391 is 1939498988.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8898949391 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 (8898949399) 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, 56322386 + ... + 56322543.

It is an arithmetic number, because the mean of its divisors is an integer number (2252898600).

Almost surely, 2^8898949391 is an apocalyptic number.

8898949391 is a deficient number, since it is larger than the sum of its proper divisors (112645009).

8898949391 is a wasteful number, since it uses less digits than its factorization.

8898949391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112645008.

The product of its digits is 40310784, while the sum is 68.

The square root of 8898949391 is about 94334.2429396664. The cubic root of 8898949391 is about 2072.2695506289.

The spelling of 8898949391 in words is "eight billion, eight hundred ninety-eight million, nine hundred forty-nine thousand, three hundred ninety-one".