36889639 has 2 divisors, whose sum is σ = 36889640. Its totient is φ = 36889638.

The previous prime is 36889613. The next prime is 36889663. The reversal of 36889639 is 93698863.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 36889639 - 2²¹ = 34792487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36889679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18444819 + 18444820.

It is an arithmetic number, because the mean of its divisors is an integer number (18444820).

Almost surely, 2^36889639 is an apocalyptic number.

36889639 is a deficient number, since it is larger than the sum of its proper divisors (1).

36889639 is an equidigital number, since it uses as much as digits as its factorization.

36889639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1679616, while the sum is 52.

The square root of 36889639 is about 6073.6841373255. The cubic root of 36889639 is about 332.8905513149.

The spelling of 36889639 in words is "thirty-six million, eight hundred eighty-nine thousand, six hundred thirty-nine".