139001853 has 8 divisors (see below), whose sum is σ = 195090400. Its totient is φ = 87790608.

The previous prime is 139001851. The next prime is 139001879. The reversal of 139001853 is 358100931.

It is a happy number.

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

It is not a de Polignac number, because 139001853 - 2¹ = 139001851 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 139001853.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139001851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1219258 + ... + 1219371.

It is an arithmetic number, because the mean of its divisors is an integer number (24386300).

Almost surely, 2^139001853 is an apocalyptic number.

It is an amenable number.

139001853 is a deficient number, since it is larger than the sum of its proper divisors (56088547).

139001853 is a wasteful number, since it uses less digits than its factorization.

139001853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2438651.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 139001853 is about 11789.9047069940. The cubic root of 139001853 is about 518.0124485810.

It can be divided in two parts, 13900 and 1853, that added together give a triangular number (15753 = T₁₇₇).

The spelling of 139001853 in words is "one hundred thirty-nine million, one thousand, eight hundred fifty-three".