898137893 has 4 divisors (see below), whose sum is σ = 908229420. Its totient is φ = 888046368.

The previous prime is 898137871. The next prime is 898137913. The reversal of 898137893 is 398731898.

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

It can be written as a sum of positive squares in 2 ways, for example, as 611919169 + 286218724 = 24737^2 + 16918^2 .

It is a cyclic number.

It is not a de Polignac number, because 898137893 - 2⁸ = 898137637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (898137293) 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, 5045630 + ... + 5045807.

It is an arithmetic number, because the mean of its divisors is an integer number (227057355).

Almost surely, 2^898137893 is an apocalyptic number.

It is an amenable number.

898137893 is a deficient number, since it is larger than the sum of its proper divisors (10091527).

898137893 is a wasteful number, since it uses less digits than its factorization.

898137893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10091526.

The product of its digits is 2612736, while the sum is 56.

The square root of 898137893 is about 29968.9488137305. The cubic root of 898137893 is about 964.8230564994.

The spelling of 898137893 in words is "eight hundred ninety-eight million, one hundred thirty-seven thousand, eight hundred ninety-three".