139097788 has 6 divisors (see below), whose sum is σ = 243421136. Its totient is φ = 69548892.

The previous prime is 139097779. The next prime is 139097797. The reversal of 139097788 is 887790931.

139097788 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (139097779) and next prime (139097797).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17387220 + ... + 17387227.

Almost surely, 2^139097788 is an apocalyptic number.

It is an amenable number.

139097788 is a deficient number, since it is larger than the sum of its proper divisors (104323348).

139097788 is a wasteful number, since it uses less digits than its factorization.

139097788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34774451 (or 34774449 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 52.

The square root of 139097788 is about 11793.9725283723. The cubic root of 139097788 is about 518.1315935055.

The spelling of 139097788 in words is "one hundred thirty-nine million, ninety-seven thousand, seven hundred eighty-eight".