890093137 has 2 divisors, whose sum is σ = 890093138. Its totient is φ = 890093136.

The previous prime is 890093107. The next prime is 890093189. The reversal of 890093137 is 731390098.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 668946496 + 221146641 = 25864^2 + 14871^2 .

It is a cyclic number.

It is not a de Polignac number, because 890093137 - 2²³ = 881704529 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 890093137.

It is not a weakly prime, because it can be changed into another prime (890093107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 445046568 + 445046569.

It is an arithmetic number, because the mean of its divisors is an integer number (445046569).

Almost surely, 2^890093137 is an apocalyptic number.

It is an amenable number.

890093137 is a deficient number, since it is larger than the sum of its proper divisors (1).

890093137 is an equidigital number, since it uses as much as digits as its factorization.

890093137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 890093137 is about 29834.4287191828. The cubic root of 890093137 is about 961.9337241813.

The spelling of 890093137 in words is "eight hundred ninety million, ninety-three thousand, one hundred thirty-seven".