139448497333 has 4 divisors (see below), whose sum is σ = 139491955980. Its totient is φ = 139405038688.

The previous prime is 139448497231. The next prime is 139448497337. The reversal of 139448497333 is 333794844931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 333794844931 = 320611 ⋅1041121.

It can be written as a sum of positive squares in 2 ways, for example, as 107097798564 + 32350698769 = 327258^2 + 179863^2 .

It is a cyclic number.

It is not a de Polignac number, because 139448497333 - 2⁹ = 139448496821 is a prime.

It is a super-2 number, since 2×139448497333² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139448497337) 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, 21724510 + ... + 21730927.

It is an arithmetic number, because the mean of its divisors is an integer number (34872988995).

Almost surely, 2^139448497333 is an apocalyptic number.

It is an amenable number.

139448497333 is a deficient number, since it is larger than the sum of its proper divisors (43458647).

139448497333 is an equidigital number, since it uses as much as digits as its factorization.

139448497333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43458646.

The product of its digits is 23514624, while the sum is 58.

The spelling of 139448497333 in words is "one hundred thirty-nine billion, four hundred forty-eight million, four hundred ninety-seven thousand, three hundred thirty-three".