139157803 has 2 divisors, whose sum is σ = 139157804. Its totient is φ = 139157802.

The previous prime is 139157773. The next prime is 139157857. The reversal of 139157803 is 308751931.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139157803 is a prime.

It is not a weakly prime, because it can be changed into another prime (139157873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69578901 + 69578902.

It is an arithmetic number, because the mean of its divisors is an integer number (69578902).

Almost surely, 2^139157803 is an apocalyptic number.

139157803 is a deficient number, since it is larger than the sum of its proper divisors (1).

139157803 is an equidigital number, since it uses as much as digits as its factorization.

139157803 is an evil number, because the sum of its binary digits is even.

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

The square root of 139157803 is about 11796.5165621043. The cubic root of 139157803 is about 518.2061003134.

The spelling of 139157803 in words is "one hundred thirty-nine million, one hundred fifty-seven thousand, eight hundred three".