3897617797 has 2 divisors, whose sum is σ = 3897617798. Its totient is φ = 3897617796.

The previous prime is 3897617771. The next prime is 3897617813. The reversal of 3897617797 is 7977167983.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3311542116 + 586075681 = 57546^2 + 24209^2 .

It is a cyclic number.

It is not a de Polignac number, because 3897617797 - 2¹⁹ = 3897093509 is a prime.

It is a super-2 number, since 2×3897617797² = 30382848982982266418, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3897615797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1948808898 + 1948808899.

It is an arithmetic number, because the mean of its divisors is an integer number (1948808899).

Almost surely, 2^3897617797 is an apocalyptic number.

It is an amenable number.

3897617797 is a deficient number, since it is larger than the sum of its proper divisors (1).

3897617797 is an equidigital number, since it uses as much as digits as its factorization.

3897617797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28005264, while the sum is 64.

The square root of 3897617797 is about 62430.9041821436. The cubic root of 3897617797 is about 1573.7403613862.

The spelling of 3897617797 in words is "three billion, eight hundred ninety-seven million, six hundred seventeen thousand, seven hundred ninety-seven".