139287796 has 12 divisors (see below), whose sum is σ = 247093252. Its totient is φ = 68689728.

The previous prime is 139287791. The next prime is 139287821. The reversal of 139287796 is 697782931.

139287796 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 42068196 + 97219600 = 6486^2 + 9860^2 .

It is a super-2 number, since 2×139287796² = 38802180229075232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139287791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 238215 + ... + 238798.

Almost surely, 2^139287796 is an apocalyptic number.

It is an amenable number.

139287796 is a deficient number, since it is larger than the sum of its proper divisors (107805456).

139287796 is a wasteful number, since it uses less digits than its factorization.

139287796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477090 (or 477088 counting only the distinct ones).

The product of its digits is 1143072, while the sum is 52.

The square root of 139287796 is about 11802.0250804682. The cubic root of 139287796 is about 518.3674092721.

The spelling of 139287796 in words is "one hundred thirty-nine million, two hundred eighty-seven thousand, seven hundred ninety-six".