35813989 has 2 divisors, whose sum is σ = 35813990. Its totient is φ = 35813988.

The previous prime is 35813957. The next prime is 35814007. The reversal of 35813989 is 98931853.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24423364 + 11390625 = 4942^2 + 3375^2 .

It is an emirp because it is prime and its reverse (98931853) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 35813989 - 2⁵ = 35813957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (35813929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17906994 + 17906995.

It is an arithmetic number, because the mean of its divisors is an integer number (17906995).

Almost surely, 2^35813989 is an apocalyptic number.

It is an amenable number.

35813989 is a deficient number, since it is larger than the sum of its proper divisors (1).

35813989 is an equidigital number, since it uses as much as digits as its factorization.

35813989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 233280, while the sum is 46.

The square root of 35813989 is about 5984.4790082346. The cubic root of 35813989 is about 329.6230437052.

The spelling of 35813989 in words is "thirty-five million, eight hundred thirteen thousand, nine hundred eighty-nine".