155439996 has 12 divisors (see below), whose sum is σ = 362693352. Its totient is φ = 51813328.

The previous prime is 155439961. The next prime is 155440009. The reversal of 155439996 is 699934551.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6476655 + ... + 6476678.

It is an arithmetic number, because the mean of its divisors is an integer number (30224446).

Almost surely, 2^155439996 is an apocalyptic number.

It is an amenable number.

155439996 is an abundant number, since it is smaller than the sum of its proper divisors (207253356).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155439996 is a wasteful number, since it uses less digits than its factorization.

155439996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12953340 (or 12953338 counting only the distinct ones).

The product of its digits is 1312200, while the sum is 51.

The square root of 155439996 is about 12467.5577399906. The cubic root of 155439996 is about 537.6763391850.

The spelling of 155439996 in words is "one hundred fifty-five million, four hundred thirty-nine thousand, nine hundred ninety-six".