155929949 has 16 divisors (see below), whose sum is σ = 187779072. Its totient is φ = 126588528.

The previous prime is 155929919. The next prime is 155929957. The reversal of 155929949 is 949929551.

It is a cyclic number.

It is not a de Polignac number, because 155929949 - 2¹⁶ = 155864413 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 155929949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155929919) 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, 11882 + ... + 21284.

It is an arithmetic number, because the mean of its divisors is an integer number (11736192).

Almost surely, 2^155929949 is an apocalyptic number.

It is an amenable number.

155929949 is a deficient number, since it is larger than the sum of its proper divisors (31849123).

155929949 is a wasteful number, since it uses less digits than its factorization.

155929949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9536.

The product of its digits is 1312200, while the sum is 53.

The square root of 155929949 is about 12487.1913975882. The cubic root of 155929949 is about 538.2406723443.

The spelling of 155929949 in words is "one hundred fifty-five million, nine hundred twenty-nine thousand, nine hundred forty-nine".