36879991 has 2 divisors, whose sum is σ = 36879992. Its totient is φ = 36879990.

The previous prime is 36879977. The next prime is 36880001. The reversal of 36879991 is 19997863.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 36879991 - 2¹⁹ = 36355703 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36879391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18439995 + 18439996.

It is an arithmetic number, because the mean of its divisors is an integer number (18439996).

Almost surely, 2^36879991 is an apocalyptic number.

36879991 is a deficient number, since it is larger than the sum of its proper divisors (1).

36879991 is an equidigital number, since it uses as much as digits as its factorization.

36879991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 734832, while the sum is 52.

The square root of 36879991 is about 6072.8898392775. The cubic root of 36879991 is about 332.8615277357.

The spelling of 36879991 in words is "thirty-six million, eight hundred seventy-nine thousand, nine hundred ninety-one".