155980429 has 4 divisors (see below), whose sum is σ = 170160480. Its totient is φ = 141800380.

The previous prime is 155980399. The next prime is 155980439. The reversal of 155980429 is 924089551.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 155980429 - 2⁹ = 155979917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155980439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7090009 + ... + 7090030.

It is an arithmetic number, because the mean of its divisors is an integer number (42540120).

Almost surely, 2^155980429 is an apocalyptic number.

It is an amenable number.

155980429 is a deficient number, since it is larger than the sum of its proper divisors (14180051).

155980429 is a wasteful number, since it uses less digits than its factorization.

155980429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14180050.

The product of its (nonzero) digits is 129600, while the sum is 43.

The square root of 155980429 is about 12489.2125051982. The cubic root of 155980429 is about 538.2987485463.

It can be divided in two parts, 1559804 and 29, that multiplied together give a triangular number (45234316 = T₉₅₁₁).

The spelling of 155980429 in words is "one hundred fifty-five million, nine hundred eighty thousand, four hundred twenty-nine".