126395399 has 4 divisors (see below), whose sum is σ = 136118136. Its totient is φ = 116672664.

The previous prime is 126395393. The next prime is 126395411. The reversal of 126395399 is 993593621.

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 126395399 - 2⁴ = 126395383 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 (126395393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4861349 + ... + 4861374.

It is an arithmetic number, because the mean of its divisors is an integer number (34029534).

Almost surely, 2^126395399 is an apocalyptic number.

126395399 is a deficient number, since it is larger than the sum of its proper divisors (9722737).

126395399 is an equidigital number, since it uses as much as digits as its factorization.

126395399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9722736.

The product of its digits is 393660, while the sum is 47.

The square root of 126395399 is about 11242.5708358898. The cubic root of 126395399 is about 501.8536514603.

The spelling of 126395399 in words is "one hundred twenty-six million, three hundred ninety-five thousand, three hundred ninety-nine".