135998445 has 16 divisors (see below), whose sum is σ = 237379392. Its totient is φ = 65938560.

The previous prime is 135998437. The next prime is 135998449. The reversal of 135998445 is 544899531.

It is not a de Polignac number, because 135998445 - 2³ = 135998437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 135998394 and 135998403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135998449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 411952 + ... + 412281.

It is an arithmetic number, because the mean of its divisors is an integer number (14836212).

Almost surely, 2^135998445 is an apocalyptic number.

135998445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

135998445 is a deficient number, since it is larger than the sum of its proper divisors (101380947).

135998445 is a wasteful number, since it uses less digits than its factorization.

135998445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824252.

The product of its digits is 777600, while the sum is 48.

The square root of 135998445 is about 11661.8371194251. The cubic root of 135998445 is about 514.2543581522.

The spelling of 135998445 in words is "one hundred thirty-five million, nine hundred ninety-eight thousand, four hundred forty-five".