139451853 has 8 divisors (see below), whose sum is σ = 190961248. Its totient is φ = 90455184.

The previous prime is 139451843. The next prime is 139451861. The reversal of 139451853 is 358154931.

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

It is not a de Polignac number, because 139451853 - 2¹² = 139447757 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139451843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 628051 + ... + 628272.

It is an arithmetic number, because the mean of its divisors is an integer number (23870156).

Almost surely, 2^139451853 is an apocalyptic number.

It is an amenable number.

139451853 is a deficient number, since it is larger than the sum of its proper divisors (51509395).

139451853 is a wasteful number, since it uses less digits than its factorization.

139451853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1256363.

The product of its digits is 64800, while the sum is 39.

The square root of 139451853 is about 11808.9734100810. The cubic root of 139451853 is about 518.5708452231.

The spelling of 139451853 in words is "one hundred thirty-nine million, four hundred fifty-one thousand, eight hundred fifty-three".