154247389 has 8 divisors (see below), whose sum is σ = 155525792. Its totient is φ = 152973360.

The previous prime is 154247383. The next prime is 154247393. The reversal of 154247389 is 983742451.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 154247389 - 2³ = 154247381 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 (154247381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118834 + ... + 120124.

It is an arithmetic number, because the mean of its divisors is an integer number (19440724).

Almost surely, 2^154247389 is an apocalyptic number.

It is an amenable number.

154247389 is a deficient number, since it is larger than the sum of its proper divisors (1278403).

154247389 is a wasteful number, since it uses less digits than its factorization.

154247389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2187.

The product of its digits is 241920, while the sum is 43.

The square root of 154247389 is about 12419.6372330274. The cubic root of 154247389 is about 536.2977074249.

The spelling of 154247389 in words is "one hundred fifty-four million, two hundred forty-seven thousand, three hundred eighty-nine".