36400139 has 4 divisors (see below), whose sum is σ = 36412224. Its totient is φ = 36388056.

The previous prime is 36400121. The next prime is 36400141. The reversal of 36400139 is 93100463.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 36400139 - 2¹² = 36396043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36400339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2534 + ... + 8900.

It is an arithmetic number, because the mean of its divisors is an integer number (9103056).

Almost surely, 2^36400139 is an apocalyptic number.

36400139 is a deficient number, since it is larger than the sum of its proper divisors (12085).

36400139 is an equidigital number, since it uses as much as digits as its factorization.

36400139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12084.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 36400139 is about 6033.2527711012. The cubic root of 36400139 is about 331.4115811194.

The spelling of 36400139 in words is "thirty-six million, four hundred thousand, one hundred thirty-nine".