36799991 has 2 divisors, whose sum is σ = 36799992. Its totient is φ = 36799990.

The previous prime is 36799949. The next prime is 36799993. The reversal of 36799991 is 19999763.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36799991 is a prime.

Together with 36799993, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36799993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18399995 + 18399996.

It is an arithmetic number, because the mean of its divisors is an integer number (18399996).

Almost surely, 2^36799991 is an apocalyptic number.

36799991 is a deficient number, since it is larger than the sum of its proper divisors (1).

36799991 is an equidigital number, since it uses as much as digits as its factorization.

36799991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 826686, while the sum is 53.

The square root of 36799991 is about 6066.2996134382. The cubic root of 36799991 is about 332.6206726523.

The spelling of 36799991 in words is "thirty-six million, seven hundred ninety-nine thousand, nine hundred ninety-one".