154869229 has 4 divisors (see below), whose sum is σ = 155291584. Its totient is φ = 154446876.

The previous prime is 154869199. The next prime is 154869283. The reversal of 154869229 is 922968451.

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 a de Polignac number, because none of the positive numbers 2^k-154869229 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 (154869289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210627 + ... + 211360.

It is an arithmetic number, because the mean of its divisors is an integer number (38822896).

Almost surely, 2^154869229 is an apocalyptic number.

It is an amenable number.

154869229 is a deficient number, since it is larger than the sum of its proper divisors (422355).

154869229 is an equidigital number, since it uses as much as digits as its factorization.

154869229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422354.

The product of its digits is 311040, while the sum is 46.

The square root of 154869229 is about 12444.6466000445. The cubic root of 154869229 is about 537.0174261806.

The spelling of 154869229 in words is "one hundred fifty-four million, eight hundred sixty-nine thousand, two hundred twenty-nine".