139938560770969 has 3 divisors (see below), whose sum is σ = 139938572600533. Its totient is φ = 139938548941406.

The previous prime is 139938560770951. The next prime is 139938560771029. The reversal of 139938560770969 is 969077065839931.

The square root of 139938560770969 is 11829563.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 139938560770969 - 2¹¹ = 139938560768921 is a prime.

It is a super-2 number, since 2×139938560770969² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 139938560770892 and 139938560770901.

It is not an unprimeable number, because it can be changed into a prime (139938560780969) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 5914782 + ... + 17744344.

Almost surely, 2^{139938560770969} is an apocalyptic number.

139938560770969 is the 11829563-rd square number.

139938560770969 is the 5914782-nd centered octagonal number.

It is an amenable number.

139938560770969 is a deficient number, since it is larger than the sum of its proper divisors (11829564).

139938560770969 is an frugal number, since it uses more digits than its factorization.

139938560770969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23659126 (or 11829563 counting only the distinct ones).

The product of its (nonzero) digits is 4166497440, while the sum is 82.

The spelling of 139938560770969 in words is "one hundred thirty-nine trillion, nine hundred thirty-eight billion, five hundred sixty million, seven hundred seventy thousand, nine hundred sixty-nine".