36405389 has 8 divisors (see below), whose sum is σ = 38048832. Its totient is φ = 34767040.

The previous prime is 36405379. The next prime is 36405409. The reversal of 36405389 is 98350463.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 36405389 - 2²⁰ = 35356813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36405379) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26069 + ... + 27429.

It is an arithmetic number, because the mean of its divisors is an integer number (4756104).

Almost surely, 2^36405389 is an apocalyptic number.

It is an amenable number.

36405389 is a deficient number, since it is larger than the sum of its proper divisors (1643443).

36405389 is a wasteful number, since it uses less digits than its factorization.

36405389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2547.

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 36405389 is about 6033.6878440967. The cubic root of 36405389 is about 331.4275135417.

The spelling of 36405389 in words is "thirty-six million, four hundred five thousand, three hundred eighty-nine".