36421399 has 4 divisors (see below), whose sum is σ = 41624464. Its totient is φ = 31218336.

The previous prime is 36421393. The next prime is 36421417. The reversal of 36421399 is 99312463.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 36421399 - 2¹⁹ = 35897111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36421393) 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, 2601522 + ... + 2601535.

It is an arithmetic number, because the mean of its divisors is an integer number (10406116).

Almost surely, 2^36421399 is an apocalyptic number.

36421399 is a deficient number, since it is larger than the sum of its proper divisors (5203065).

36421399 is an equidigital number, since it uses as much as digits as its factorization.

36421399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5203064.

The product of its digits is 34992, while the sum is 37.

The square root of 36421399 is about 6035.0144158900. The cubic root of 36421399 is about 331.4760903870.

It can be divided in two parts, 3642 and 1399, that added together give a square (5041 = 71²).

The spelling of 36421399 in words is "thirty-six million, four hundred twenty-one thousand, three hundred ninety-nine".