155349379 has 4 divisors (see below), whose sum is σ = 155374384. Its totient is φ = 155324376.

The previous prime is 155349343. The next prime is 155349409. The reversal of 155349379 is 973943551.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 155349379 - 2⁹ = 155348867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155349679) 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, 4789 + ... + 18265.

It is an arithmetic number, because the mean of its divisors is an integer number (38843596).

Almost surely, 2^155349379 is an apocalyptic number.

155349379 is a deficient number, since it is larger than the sum of its proper divisors (25005).

155349379 is a wasteful number, since it uses less digits than its factorization.

155349379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25004.

The product of its digits is 510300, while the sum is 46.

The square root of 155349379 is about 12463.9230982865. The cubic root of 155349379 is about 537.5718356486.

The spelling of 155349379 in words is "one hundred fifty-five million, three hundred forty-nine thousand, three hundred seventy-nine".