37790989 has 2 divisors, whose sum is σ = 37790990. Its totient is φ = 37790988.

The previous prime is 37790947. The next prime is 37791007. The reversal of 37790989 is 98909773.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20775364 + 17015625 = 4558^2 + 4125^2 .

It is a cyclic number.

It is not a de Polignac number, because 37790989 - 2⁷ = 37790861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (37790089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18895494 + 18895495.

It is an arithmetic number, because the mean of its divisors is an integer number (18895495).

Almost surely, 2^37790989 is an apocalyptic number.

It is an amenable number.

37790989 is a deficient number, since it is larger than the sum of its proper divisors (1).

37790989 is an equidigital number, since it uses as much as digits as its factorization.

37790989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 857304, while the sum is 52.

The square root of 37790989 is about 6147.4375962672. The cubic root of 37790989 is about 335.5800124996.

The spelling of 37790989 in words is "thirty-seven million, seven hundred ninety thousand, nine hundred eighty-nine".