3896664156009 has 63 divisors (see below), whose sum is σ = 5903607708583. Its totient is φ = 2570807356992.

The previous prime is 3896664155999. The next prime is 3896664156061. The reversal of 3896664156009 is 9006514666983.

The square root of 3896664156009 is 1973997.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 68662341225 + 3828001814784 = 262035^2 + 1956528^2 .

It is not a de Polignac number, because 3896664156009 - 2⁵ = 3896664155977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3896664156089) by changing a digit.

It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 6022664524 + ... + 6022665170.

Almost surely, 2^{3896664156009} is an apocalyptic number.

3896664156009 is the 1973997-th square number.

3896664156009 is the 986999-th centered octagonal number.

It is an amenable number.

3896664156009 is a deficient number, since it is larger than the sum of its proper divisors (2006943552574).

3896664156009 is an frugal number, since it uses more digits than its factorization.

3896664156009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1538 (or 763 counting only the distinct ones).

The product of its (nonzero) digits is 50388480, while the sum is 63.

The spelling of 3896664156009 in words is "three trillion, eight hundred ninety-six billion, six hundred sixty-four million, one hundred fifty-six thousand, nine".