993999037 has 2 divisors, whose sum is σ = 993999038. Its totient is φ = 993999036.

The previous prime is 993999029. The next prime is 993999059. The reversal of 993999037 is 730999399.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 985583236 + 8415801 = 31394^2 + 2901^2 .

It is a cyclic number.

It is not a de Polignac number, because 993999037 - 2³ = 993999029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (993999067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496999518 + 496999519.

It is an arithmetic number, because the mean of its divisors is an integer number (496999519).

Almost surely, 2^993999037 is an apocalyptic number.

It is an amenable number.

993999037 is a deficient number, since it is larger than the sum of its proper divisors (1).

993999037 is an equidigital number, since it uses as much as digits as its factorization.

993999037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3720087, while the sum is 58.

The square root of 993999037 is about 31527.7502686126. The cubic root of 993999037 is about 997.9956643225.

The spelling of 993999037 in words is "nine hundred ninety-three million, nine hundred ninety-nine thousand, thirty-seven".