3626989 has 2 divisors, whose sum is σ = 3626990. Its totient is φ = 3626988.

The previous prime is 3626981. The next prime is 3627023. The reversal of 3626989 is 9896263.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2350089 + 1276900 = 1533^2 + 1130^2 .

It is a cyclic number.

It is not a de Polignac number, because 3626989 - 2³ = 3626981 is a prime.

It is a super-2 number, since 2×3626989² = 26310098412242, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3626981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1813494 + 1813495.

It is an arithmetic number, because the mean of its divisors is an integer number (1813495).

Almost surely, 2^3626989 is an apocalyptic number.

It is an amenable number.

3626989 is a deficient number, since it is larger than the sum of its proper divisors (1).

3626989 is an equidigital number, since it uses as much as digits as its factorization.

3626989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 43.

The square root of 3626989 is about 1904.4655418253. The cubic root of 3626989 is about 153.6439319549.

The spelling of 3626989 in words is "three million, six hundred twenty-six thousand, nine hundred eighty-nine".