3942897262929 has 27 divisors (see below), whose sum is σ = 5775019464123. Its totient is φ = 2592304044192.

The previous prime is 3942897262919. The next prime is 3942897262951. The reversal of 3942897262929 is 9292627982493.

The square root of 3942897262929 is 1985673.

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

3942897262929 is a `hidden beast` number, since 3 + 9 + 428 + 97 + 26 + 2 + 92 + 9 = 666.

3942897262929 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 2238180563025 + 1704716699904 = 1496055^2 + 1305648^2 .

It is a de Polignac number, because none of the positive numbers 2^k-3942897262929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3942897262919) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 434857854 + ... + 434866920.

Almost surely, 2^{3942897262929} is an apocalyptic number.

3942897262929 is the 1985673-rd square number.

3942897262929 is the 992837-th centered octagonal number.

It is an amenable number.

3942897262929 is a deficient number, since it is larger than the sum of its proper divisors (1832122201194).

3942897262929 is an frugal number, since it uses more digits than its factorization.

3942897262929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18286 (or 9143 counting only the distinct ones).

The product of its digits is 423263232, while the sum is 72.

The spelling of 3942897262929 in words is "three trillion, nine hundred forty-two billion, eight hundred ninety-seven million, two hundred sixty-two thousand, nine hundred twenty-nine".