154428349 has 4 divisors (see below), whose sum is σ = 154655136. Its totient is φ = 154201564.

The previous prime is 154428259. The next prime is 154428353. The reversal of 154428349 is 943824451.

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, and also an emirpimes, since its reverse is a distinct semiprime: 943824451 = 15727 ⋅60013.

It is a cyclic number.

It is not a de Polignac number, because 154428349 - 2⁹ = 154427837 is a prime.

It is a super-2 number, since 2×154428349² = 47696229949731602, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154428359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112369 + ... + 113734.

It is an arithmetic number, because the mean of its divisors is an integer number (38663784).

Almost surely, 2^154428349 is an apocalyptic number.

It is an amenable number.

154428349 is a deficient number, since it is larger than the sum of its proper divisors (226787).

154428349 is an equidigital number, since it uses as much as digits as its factorization.

154428349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226786.

The product of its digits is 138240, while the sum is 40.

The square root of 154428349 is about 12426.9203344996. The cubic root of 154428349 is about 536.5073501007.

The spelling of 154428349 in words is "one hundred fifty-four million, four hundred twenty-eight thousand, three hundred forty-nine".