139854999 has 8 divisors (see below), whose sum is σ = 186615792. Its totient is φ = 93165440.

The previous prime is 139854997. The next prime is 139855007. The reversal of 139854999 is 999458931.

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 139854999 - 2¹ = 139854997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139854997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13044 + ... + 21209.

It is an arithmetic number, because the mean of its divisors is an integer number (23326974).

Almost surely, 2^139854999 is an apocalyptic number.

139854999 is a deficient number, since it is larger than the sum of its proper divisors (46760793).

139854999 is a wasteful number, since it uses less digits than its factorization.

139854999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35617.

The product of its digits is 3149280, while the sum is 57.

The square root of 139854999 is about 11826.0305682000. The cubic root of 139854999 is about 519.0700823460.

The spelling of 139854999 in words is "one hundred thirty-nine million, eight hundred fifty-four thousand, nine hundred ninety-nine".