37940989 has 2 divisors, whose sum is σ = 37940990. Its totient is φ = 37940988.

The previous prime is 37940983. The next prime is 37941017. The reversal of 37940989 is 98904973.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24176889 + 13764100 = 4917^2 + 3710^2 .

It is a cyclic number.

It is not a de Polignac number, because 37940989 - 2⁹ = 37940477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (37940983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18970494 + 18970495.

It is an arithmetic number, because the mean of its divisors is an integer number (18970495).

Almost surely, 2^37940989 is an apocalyptic number.

It is an amenable number.

37940989 is a deficient number, since it is larger than the sum of its proper divisors (1).

37940989 is an equidigital number, since it uses as much as digits as its factorization.

37940989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 489888, while the sum is 49.

The square root of 37940989 is about 6159.6257191489. The cubic root of 37940989 is about 336.0234211045.

The spelling of 37940989 in words is "thirty-seven million, nine hundred forty thousand, nine hundred eighty-nine".