139765903 has 2 divisors, whose sum is σ = 139765904. Its totient is φ = 139765902.

The previous prime is 139765883. The next prime is 139765987. The reversal of 139765903 is 309567931.

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-139765903 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 139765903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139765103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69882951 + 69882952.

It is an arithmetic number, because the mean of its divisors is an integer number (69882952).

Almost surely, 2^139765903 is an apocalyptic number.

139765903 is a deficient number, since it is larger than the sum of its proper divisors (1).

139765903 is an equidigital number, since it uses as much as digits as its factorization.

139765903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 153090, while the sum is 43.

The square root of 139765903 is about 11822.2630236347. The cubic root of 139765903 is about 518.9598327003.

The spelling of 139765903 in words is "one hundred thirty-nine million, seven hundred sixty-five thousand, nine hundred three".