136399629 has 4 divisors (see below), whose sum is σ = 181866176. Its totient is φ = 90933084.

The previous prime is 136399621. The next prime is 136399633. The reversal of 136399629 is 926993631.

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: 926993631 = 3 ⋅308997877.

It is not a de Polignac number, because 136399629 - 2³ = 136399621 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 (136399621) 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, 22733269 + ... + 22733274.

It is an arithmetic number, because the mean of its divisors is an integer number (45466544).

Almost surely, 2^136399629 is an apocalyptic number.

It is an amenable number.

136399629 is a deficient number, since it is larger than the sum of its proper divisors (45466547).

136399629 is an equidigital number, since it uses as much as digits as its factorization.

136399629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45466546.

The product of its digits is 472392, while the sum is 48.

The square root of 136399629 is about 11679.0251733610. The cubic root of 136399629 is about 514.7595308054.

The spelling of 136399629 in words is "one hundred thirty-six million, three hundred ninety-nine thousand, six hundred twenty-nine".