898423831 has 2 divisors, whose sum is σ = 898423832. Its totient is φ = 898423830.

The previous prime is 898423817. The next prime is 898423879. The reversal of 898423831 is 138324898.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 898423831 - 2²⁵ = 864869399 is a prime.

It is a super-2 number, since 2×898423831² = 1614330760217433122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (898423891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 449211915 + 449211916.

It is an arithmetic number, because the mean of its divisors is an integer number (449211916).

Almost surely, 2^898423831 is an apocalyptic number.

898423831 is a deficient number, since it is larger than the sum of its proper divisors (1).

898423831 is an equidigital number, since it uses as much as digits as its factorization.

898423831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 331776, while the sum is 46.

The square root of 898423831 is about 29973.7190051552. The cubic root of 898423831 is about 964.9254351005.

The spelling of 898423831 in words is "eight hundred ninety-eight million, four hundred twenty-three thousand, eight hundred thirty-one".