254194899839 has 4 divisors (see below), whose sum is σ = 269147541024. Its totient is φ = 239242258656.

The previous prime is 254194899779. The next prime is 254194899853. The reversal of 254194899839 is 938998491452.

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 254194899839 - 2¹² = 254194895743 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 (254194899869) 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, 7476320567 + ... + 7476320600.

It is an arithmetic number, because the mean of its divisors is an integer number (67286885256).

Almost surely, 2^254194899839 is an apocalyptic number.

254194899839 is a deficient number, since it is larger than the sum of its proper divisors (14952641185).

254194899839 is a wasteful number, since it uses less digits than its factorization.

254194899839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14952641184.

The product of its digits is 201553920, while the sum is 71.

The spelling of 254194899839 in words is "two hundred fifty-four billion, one hundred ninety-four million, eight hundred ninety-nine thousand, eight hundred thirty-nine".