154813399 has 4 divisors (see below), whose sum is σ = 166722136. Its totient is φ = 142904664.

The previous prime is 154813369. The next prime is 154813403. The reversal of 154813399 is 993318451.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 154813399 - 2⁵ = 154813367 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 (154813369) 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, 5954349 + ... + 5954374.

It is an arithmetic number, because the mean of its divisors is an integer number (41680534).

Almost surely, 2^154813399 is an apocalyptic number.

154813399 is a deficient number, since it is larger than the sum of its proper divisors (11908737).

154813399 is a wasteful number, since it uses less digits than its factorization.

154813399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11908736.

The product of its digits is 116640, while the sum is 43.

The square root of 154813399 is about 12442.4032646430. The cubic root of 154813399 is about 536.9528872432.

The spelling of 154813399 in words is "one hundred fifty-four million, eight hundred thirteen thousand, three hundred ninety-nine".