135988401 has 8 divisors (see below), whose sum is σ = 181600704. Its totient is φ = 90517520.

The previous prime is 135988393. The next prime is 135988409. The reversal of 135988401 is 104889531.

It is an interprime number because it is at equal distance from previous prime (135988393) and next prime (135988409).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 135988401 - 2³ = 135988393 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 135988401.

It is not an unprimeable number, because it can be changed into a prime (135988409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33090 + ... + 36971.

It is an arithmetic number, because the mean of its divisors is an integer number (22700088).

Almost surely, 2^135988401 is an apocalyptic number.

It is an amenable number.

135988401 is a deficient number, since it is larger than the sum of its proper divisors (45612303).

135988401 is an equidigital number, since it uses as much as digits as its factorization.

135988401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70711.

The product of its (nonzero) digits is 34560, while the sum is 39.

The square root of 135988401 is about 11661.4064760645. The cubic root of 135988401 is about 514.2416979635.

The spelling of 135988401 in words is "one hundred thirty-five million, nine hundred eighty-eight thousand, four hundred one".