37436989 has 2 divisors, whose sum is σ = 37436990. Its totient is φ = 37436988.

The previous prime is 37436947. The next prime is 37437089. The reversal of 37436989 is 98963473.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36505764 + 931225 = 6042^2 + 965^2 .

It is a cyclic number.

It is not a de Polignac number, because 37436989 - 2¹¹ = 37434941 is a prime.

It is a super-2 number, since 2×37436989² = 2803056290772242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (37436929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18718494 + 18718495.

It is an arithmetic number, because the mean of its divisors is an integer number (18718495).

Almost surely, 2^37436989 is an apocalyptic number.

It is an amenable number.

37436989 is a deficient number, since it is larger than the sum of its proper divisors (1).

37436989 is an equidigital number, since it uses as much as digits as its factorization.

37436989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 979776, while the sum is 49.

The square root of 37436989 is about 6118.5773673298. The cubic root of 37436989 is about 334.5288959854.

The spelling of 37436989 in words is "thirty-seven million, four hundred thirty-six thousand, nine hundred eighty-nine".