136230399 has 36 divisors (see below), whose sum is σ = 214289400. Its totient is φ = 83164320.

The previous prime is 136230383. The next prime is 136230421. The reversal of 136230399 is 993032631.

It is a happy number.

136230399 is a `hidden beast` number, since 1 + 36 + 230 + 399 = 666.

It is not a de Polignac number, because 136230399 - 2⁴ = 136230383 is a prime.

It is a super-2 number, since 2×136230399² = 37117443223398402, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136230599) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 163917 + ... + 164745.

Almost surely, 2^136230399 is an apocalyptic number.

136230399 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

136230399 is a deficient number, since it is larger than the sum of its proper divisors (78059001).

136230399 is a wasteful number, since it uses less digits than its factorization.

136230399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 916 (or 882 counting only the distinct ones).

The product of its (nonzero) digits is 26244, while the sum is 36.

The square root of 136230399 is about 11671.7778851382. Note that the first 3 decimals coincide. The cubic root of 136230399 is about 514.5465566021.

The spelling of 136230399 in words is "one hundred thirty-six million, two hundred thirty thousand, three hundred ninety-nine".