36400109 has 4 divisors (see below), whose sum is σ = 37017120. Its totient is φ = 35783100.

The previous prime is 36400093. The next prime is 36400121. The reversal of 36400109 is 90100463.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 36400109 - 2⁴ = 36400093 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36402109) 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, 308417 + ... + 308534.

It is an arithmetic number, because the mean of its divisors is an integer number (9254280).

Almost surely, 2^36400109 is an apocalyptic number.

It is an amenable number.

36400109 is a deficient number, since it is larger than the sum of its proper divisors (617011).

36400109 is an equidigital number, since it uses as much as digits as its factorization.

36400109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617010.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 36400109 is about 6033.2502848796. The cubic root of 36400109 is about 331.4114900725.

The spelling of 36400109 in words is "thirty-six million, four hundred thousand, one hundred nine".