3969829966 has 4 divisors (see below), whose sum is σ = 5954744952. Its totient is φ = 1984914982.

The previous prime is 3969829943. The next prime is 3969829973. The reversal of 3969829966 is 6699289693.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6699289693 = 1201 ⋅5578093.

It is a super-2 number, since 2×3969829966² = 31519099917903122312, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 992457490 + ... + 992457493.

It is an arithmetic number, because the mean of its divisors is an integer number (1488686238).

Almost surely, 2^3969829966 is an apocalyptic number.

3969829966 is a deficient number, since it is larger than the sum of its proper divisors (1984914986).

3969829966 is a wasteful number, since it uses less digits than its factorization.

3969829966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1984914985.

The product of its digits is 68024448, while the sum is 67.

The square root of 3969829966 is about 63006.5866874250. The cubic root of 3969829966 is about 1583.3999803623.

The spelling of 3969829966 in words is "three billion, nine hundred sixty-nine million, eight hundred twenty-nine thousand, nine hundred sixty-six".