135923387 has 4 divisors (see below), whose sum is σ = 139084440. Its totient is φ = 132762336.

The previous prime is 135923383. The next prime is 135923393. The reversal of 135923387 is 783329531.

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 135923387 - 2² = 135923383 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135923383) 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, 1580462 + ... + 1580547.

It is an arithmetic number, because the mean of its divisors is an integer number (34771110).

Almost surely, 2^135923387 is an apocalyptic number.

135923387 is a deficient number, since it is larger than the sum of its proper divisors (3161053).

135923387 is an equidigital number, since it uses as much as digits as its factorization.

135923387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3161052.

The product of its digits is 136080, while the sum is 41.

The square root of 135923387 is about 11658.6185716834. The cubic root of 135923387 is about 514.1597345047.

The spelling of 135923387 in words is "one hundred thirty-five million, nine hundred twenty-three thousand, three hundred eighty-seven".