998393237 has 8 divisors (see below), whose sum is σ = 1060735800. Its totient is φ = 937911744.

The previous prime is 998393191. The next prime is 998393243. The reversal of 998393237 is 732393899.

It can be written as a sum of positive squares in 4 ways, for example, as 503508721 + 494884516 = 22439^2 + 22246^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 998393237 - 2¹⁴ = 998376853 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 (998393537) 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, 464162 + ... + 466307.

It is an arithmetic number, because the mean of its divisors is an integer number (132591975).

Almost surely, 2^998393237 is an apocalyptic number.

It is an amenable number.

998393237 is a deficient number, since it is larger than the sum of its proper divisors (62342563).

998393237 is a wasteful number, since it uses less digits than its factorization.

998393237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 930535.

The product of its digits is 2204496, while the sum is 53.

The square root of 998393237 is about 31597.3612347614. The cubic root of 998393237 is about 999.4641252229.

The spelling of 998393237 in words is "nine hundred ninety-eight million, three hundred ninety-three thousand, two hundred thirty-seven".