3964686497 has 2 divisors, whose sum is σ = 3964686498. Its totient is φ = 3964686496.

The previous prime is 3964686487. The next prime is 3964686527. The reversal of 3964686497 is 7946864693.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2571605521 + 1393080976 = 50711^2 + 37324^2 .

It is a cyclic number.

It is not a de Polignac number, because 3964686497 - 2¹² = 3964682401 is a prime.

It is not a weakly prime, because it can be changed into another prime (3964686487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1982343248 + 1982343249.

It is an arithmetic number, because the mean of its divisors is an integer number (1982343249).

Almost surely, 2^3964686497 is an apocalyptic number.

It is an amenable number.

3964686497 is a deficient number, since it is larger than the sum of its proper divisors (1).

3964686497 is an equidigital number, since it uses as much as digits as its factorization.

3964686497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47029248, while the sum is 62.

The square root of 3964686497 is about 62965.7565427431. The cubic root of 3964686497 is about 1582.7158462290.

The spelling of 3964686497 in words is "three billion, nine hundred sixty-four million, six hundred eighty-six thousand, four hundred ninety-seven".