35801989 has 2 divisors, whose sum is σ = 35801990. Its totient is φ = 35801988.

The previous prime is 35801971. The next prime is 35802001. The reversal of 35801989 is 98910853.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27217089 + 8584900 = 5217^2 + 2930^2 .

It is a cyclic number.

It is not a de Polignac number, because 35801989 - 2⁷ = 35801861 is a prime.

It is a super-2 number, since 2×35801989² = 2563564832712242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (35801939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17900994 + 17900995.

It is an arithmetic number, because the mean of its divisors is an integer number (17900995).

Almost surely, 2^35801989 is an apocalyptic number.

It is an amenable number.

35801989 is a deficient number, since it is larger than the sum of its proper divisors (1).

35801989 is an equidigital number, since it uses as much as digits as its factorization.

35801989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 43.

The square root of 35801989 is about 5983.4763306961. The cubic root of 35801989 is about 329.5862245879.

The spelling of 35801989 in words is "thirty-five million, eight hundred one thousand, nine hundred eighty-nine".