139401403 has 2 divisors, whose sum is σ = 139401404. Its totient is φ = 139401402.

The previous prime is 139401373. The next prime is 139401407. The reversal of 139401403 is 304104931.

It is a happy number.

139401403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139401403 is a prime.

It is not a weakly prime, because it can be changed into another prime (139401407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69700701 + 69700702.

It is an arithmetic number, because the mean of its divisors is an integer number (69700702).

Almost surely, 2^139401403 is an apocalyptic number.

139401403 is a deficient number, since it is larger than the sum of its proper divisors (1).

139401403 is an equidigital number, since it uses as much as digits as its factorization.

139401403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 139401403 is about 11806.8371293924. The cubic root of 139401403 is about 518.5083025985.

The spelling of 139401403 in words is "one hundred thirty-nine million, four hundred one thousand, four hundred three".