36399189 has 4 divisors (see below), whose sum is σ = 48532256. Its totient is φ = 24266124.

The previous prime is 36399173. The next prime is 36399191. The reversal of 36399189 is 98199363.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 98199363 = 3 ⋅32733121.

It is not a de Polignac number, because 36399189 - 2⁴ = 36399173 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 (36399589) 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, 6066529 + ... + 6066534.

It is an arithmetic number, because the mean of its divisors is an integer number (12133064).

Almost surely, 2^36399189 is an apocalyptic number.

It is an amenable number.

36399189 is a deficient number, since it is larger than the sum of its proper divisors (12133067).

36399189 is a wasteful number, since it uses less digits than its factorization.

36399189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12133066.

The product of its digits is 314928, while the sum is 48.

The square root of 36399189 is about 6033.1740402544. The cubic root of 36399189 is about 331.4086979459.

The spelling of 36399189 in words is "thirty-six million, three hundred ninety-nine thousand, one hundred eighty-nine".