139803157 has 8 divisors (see below), whose sum is σ = 151658136. Its totient is φ = 128105472.

The previous prime is 139803151. The next prime is 139803161. The reversal of 139803157 is 751308931.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 586756 + 139216401 = 766^2 + 11799^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139803157 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 (139803151) 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, 37468 + ... + 41029.

It is an arithmetic number, because the mean of its divisors is an integer number (18957267).

Almost surely, 2^139803157 is an apocalyptic number.

It is an amenable number.

139803157 is a deficient number, since it is larger than the sum of its proper divisors (11854979).

139803157 is a wasteful number, since it uses less digits than its factorization.

139803157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78647.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 139803157 is about 11823.8385053247. The cubic root of 139803157 is about 519.0059374410.

The spelling of 139803157 in words is "one hundred thirty-nine million, eight hundred three thousand, one hundred fifty-seven".