135219944 has 32 divisors (see below), whose sum is σ = 268211520. Its totient is φ = 63778176.

The previous prime is 135219943. The next prime is 135219949. The reversal of 135219944 is 449912531.

It is a junction number, because it is equal to n+sod(n) for n = 135219898 and 135219907.

It is not an unprimeable number, because it can be changed into a prime (135219943) 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, 8399 + ... + 18465.

It is an arithmetic number, because the mean of its divisors is an integer number (8381610).

Almost surely, 2^135219944 is an apocalyptic number.

It is an amenable number.

135219944 is a deficient number, since it is larger than the sum of its proper divisors (132991576).

135219944 is a wasteful number, since it uses less digits than its factorization.

135219944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10169 (or 10165 counting only the distinct ones).

The product of its digits is 38880, while the sum is 38.

The square root of 135219944 is about 11628.4110694454. The cubic root of 135219944 is about 513.2712246590.

The spelling of 135219944 in words is "one hundred thirty-five million, two hundred nineteen thousand, nine hundred forty-four".