35686989 has 12 divisors (see below), whose sum is σ = 55513276. Its totient is φ = 21961152.

The previous prime is 35686957. The next prime is 35687009. The reversal of 35686989 is 98968653.

It can be written as a sum of positive squares in 2 ways, for example, as 3572100 + 32114889 = 1890^2 + 5667^2 .

It is not a de Polignac number, because 35686989 - 2⁵ = 35686957 is a prime.

It is a super-2 number, since 2×35686989² = 2547122367772242, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (35686919) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 152392 + ... + 152625.

Almost surely, 2^35686989 is an apocalyptic number.

35686989 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

35686989 is a deficient number, since it is larger than the sum of its proper divisors (19826287).

35686989 is a wasteful number, since it uses less digits than its factorization.

35686989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305036 (or 305033 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 54.

The square root of 35686989 is about 5973.8588031523. The cubic root of 35686989 is about 329.2329567785.

The spelling of 35686989 in words is "thirty-five million, six hundred eighty-six thousand, nine hundred eighty-nine".