39747226897 has 4 divisors (see below), whose sum is σ = 45425402176. Its totient is φ = 34069051620.

The previous prime is 39747226889. The next prime is 39747226927. The reversal of 39747226897 is 79862274793.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79862274793 = 7 ⋅11408896399.

It is a cyclic number.

It is not a de Polignac number, because 39747226897 - 2³ = 39747226889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39747226847) 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, 2839087629 + ... + 2839087642.

It is an arithmetic number, because the mean of its divisors is an integer number (11356350544).

Almost surely, 2^39747226897 is an apocalyptic number.

It is an amenable number.

39747226897 is a deficient number, since it is larger than the sum of its proper divisors (5678175279).

39747226897 is an equidigital number, since it uses as much as digits as its factorization.

39747226897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5678175278.

The product of its digits is 64012032, while the sum is 64.

The spelling of 39747226897 in words is "thirty-nine billion, seven hundred forty-seven million, two hundred twenty-six thousand, eight hundred ninety-seven".