135657299 has 4 divisors (see below), whose sum is σ = 137374560. Its totient is φ = 133940040.

The previous prime is 135657293. The next prime is 135657337. The reversal of 135657299 is 992756531.

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 135657299 - 2¹⁶ = 135591763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135657293) 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, 858512 + ... + 858669.

It is an arithmetic number, because the mean of its divisors is an integer number (34343640).

Almost surely, 2^135657299 is an apocalyptic number.

135657299 is a deficient number, since it is larger than the sum of its proper divisors (1717261).

135657299 is an equidigital number, since it uses as much as digits as its factorization.

135657299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1717260.

The product of its digits is 510300, while the sum is 47.

The square root of 135657299 is about 11647.2013376605. The cubic root of 135657299 is about 513.8240034448.

The spelling of 135657299 in words is "one hundred thirty-five million, six hundred fifty-seven thousand, two hundred ninety-nine".