990037 has 2 divisors, whose sum is σ = 990038. Its totient is φ = 990036.

The previous prime is 990023. The next prime is 990043. The reversal of 990037 is 730099.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 938961 + 51076 = 969^2 + 226^2 .

It is a cyclic number.

It is not a de Polignac number, because 990037 - 2⁷ = 989909 is a prime.

It is a super-2 number, since 2×990037² = 1960346522738, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 989987 and 990014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (990137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 495018 + 495019.

It is an arithmetic number, because the mean of its divisors is an integer number (495019).

2⁹⁹⁰⁰³⁷ is an apocalyptic number.

It is an amenable number.

990037 is a deficient number, since it is larger than the sum of its proper divisors (1).

990037 is an equidigital number, since it uses as much as digits as its factorization.

990037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1701, while the sum is 28.

The square root of 990037 is about 995.0060301325. The cubic root of 990037 is about 99.6667909505. Note that the first 3 decimals are identical.

The spelling of 990037 in words is "nine hundred ninety thousand, thirty-seven".