998150857 has 8 divisors (see below), whose sum is σ = 1090130112. Its totient is φ = 906378000.

The previous prime is 998150843. The next prime is 998150861. The reversal of 998150857 is 758051899.

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

It is a de Polignac number, because none of the positive numbers 2^k-998150857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (998150057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41394 + ... + 60907.

It is an arithmetic number, because the mean of its divisors is an integer number (136266264).

Almost surely, 2^998150857 is an apocalyptic number.

It is an amenable number.

998150857 is a deficient number, since it is larger than the sum of its proper divisors (91979255).

998150857 is a wasteful number, since it uses less digits than its factorization.

998150857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103199.

The product of its (nonzero) digits is 907200, while the sum is 52.

The square root of 998150857 is about 31593.5255550880. The cubic root of 998150857 is about 999.3832386837.

The spelling of 998150857 in words is "nine hundred ninety-eight million, one hundred fifty thousand, eight hundred fifty-seven".