139226257298 has 6 divisors (see below), whose sum is σ = 208840177479. Its totient is φ = 69612864806.

The previous prime is 139226257277. The next prime is 139226257309. The reversal of 139226257298 is 892752622931.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 69613128649 + 69613128649 = 263843^2 + 263843^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=263843.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 395765 + ... + 659607.

Almost surely, 2^139226257298 is an apocalyptic number.

139226257298 is a deficient number, since it is larger than the sum of its proper divisors (69613920181).

139226257298 is an frugal number, since it uses more digits than its factorization.

139226257298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527688 (or 263845 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 56.

The spelling of 139226257298 in words is "one hundred thirty-nine billion, two hundred twenty-six million, two hundred fifty-seven thousand, two hundred ninety-eight".