998799037 has 2 divisors, whose sum is σ = 998799038. Its totient is φ = 998799036.

The previous prime is 998799031. The next prime is 998799047. The reversal of 998799037 is 730997899.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 981318276 + 17480761 = 31326^2 + 4181^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-998799037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998799031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499399518 + 499399519.

It is an arithmetic number, because the mean of its divisors is an integer number (499399519).

Almost surely, 2^998799037 is an apocalyptic number.

It is an amenable number.

998799037 is a deficient number, since it is larger than the sum of its proper divisors (1).

998799037 is an equidigital number, since it uses as much as digits as its factorization.

998799037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7715736, while the sum is 61.

The square root of 998799037 is about 31603.7820046905. The cubic root of 998799037 is about 999.5995186361.

The spelling of 998799037 in words is "nine hundred ninety-eight million, seven hundred ninety-nine thousand, thirty-seven".