139632797 has 2 divisors, whose sum is σ = 139632798. Its totient is φ = 139632796.

The previous prime is 139632719. The next prime is 139632799. The reversal of 139632797 is 797236931.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 139098436 + 534361 = 11794^2 + 731^2 .

It is a cyclic number.

It is not a de Polignac number, because 139632797 - 2¹⁶ = 139567261 is a prime.

Together with 139632799, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139632799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69816398 + 69816399.

It is an arithmetic number, because the mean of its divisors is an integer number (69816399).

Almost surely, 2^139632797 is an apocalyptic number.

It is an amenable number.

139632797 is a deficient number, since it is larger than the sum of its proper divisors (1).

139632797 is an equidigital number, since it uses as much as digits as its factorization.

139632797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 428652, while the sum is 47.

The square root of 139632797 is about 11816.6322190377. The cubic root of 139632797 is about 518.7950366473.

The spelling of 139632797 in words is "one hundred thirty-nine million, six hundred thirty-two thousand, seven hundred ninety-seven".