36139779 has 12 divisors (see below), whose sum is σ = 56217616. Its totient is φ = 22239792.

The previous prime is 36139759. The next prime is 36139811. The reversal of 36139779 is 97793163.

It is not a de Polignac number, because 36139779 - 2¹² = 36135683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (36139759) 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, 154327 + ... + 154560.

Almost surely, 2^36139779 is an apocalyptic number.

36139779 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

36139779 is a deficient number, since it is larger than the sum of its proper divisors (20077837).

36139779 is a wasteful number, since it uses less digits than its factorization.

36139779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308906 (or 308903 counting only the distinct ones).

The product of its digits is 214326, while the sum is 45.

The square root of 36139779 is about 6011.6369650870. The cubic root of 36139779 is about 330.6195249134.

The spelling of 36139779 in words is "thirty-six million, one hundred thirty-nine thousand, seven hundred seventy-nine".