37213489 has 2 divisors, whose sum is σ = 37213490. Its totient is φ = 37213488.

The previous prime is 37213487. The next prime is 37213529. The reversal of 37213489 is 98431273.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18792225 + 18421264 = 4335^2 + 4292^2 .

It is an emirp because it is prime and its reverse (98431273) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 37213489 - 2¹ = 37213487 is a prime.

Together with 37213487, it forms a pair of twin primes.

It is equal to p_2273977 and since 37213489 and 2273977 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (37213487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18606744 + 18606745.

It is an arithmetic number, because the mean of its divisors is an integer number (18606745).

Almost surely, 2^37213489 is an apocalyptic number.

It is an amenable number.

37213489 is a deficient number, since it is larger than the sum of its proper divisors (1).

37213489 is an equidigital number, since it uses as much as digits as its factorization.

37213489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 37.

The square root of 37213489 is about 6100.2859769031. The cubic root of 37213489 is about 333.8618507872.

It can be divided in two parts, 372 and 13489, that added together give a triangular number (13861 = T₁₆₆).

The spelling of 37213489 in words is "thirty-seven million, two hundred thirteen thousand, four hundred eighty-nine".