39628478597 has 2 divisors, whose sum is σ = 39628478598. Its totient is φ = 39628478596.

The previous prime is 39628478573. The next prime is 39628478623. The reversal of 39628478597 is 79587482693.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31371848641 + 8256629956 = 177121^2 + 90866^2 .

It is a cyclic number.

It is not a de Polignac number, because 39628478597 - 2¹⁰ = 39628477573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39628378597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19814239298 + 19814239299.

It is an arithmetic number, because the mean of its divisors is an integer number (19814239299).

Almost surely, 2^39628478597 is an apocalyptic number.

It is an amenable number.

39628478597 is a deficient number, since it is larger than the sum of its proper divisors (1).

39628478597 is an equidigital number, since it uses as much as digits as its factorization.

39628478597 is an evil number, because the sum of its binary digits is even.

The product of its digits is 182891520, while the sum is 68.

The spelling of 39628478597 in words is "thirty-nine billion, six hundred twenty-eight million, four hundred seventy-eight thousand, five hundred ninety-seven".