3969245923 has 4 divisors (see below), whose sum is σ = 3969461160. Its totient is φ = 3969030688.

The previous prime is 3969245851. The next prime is 3969245933. The reversal of 3969245923 is 3295429693.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3295429693 = 57041 ⋅57773.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3969245923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3969245933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77065 + ... + 117802.

It is an arithmetic number, because the mean of its divisors is an integer number (992365290).

Almost surely, 2^3969245923 is an apocalyptic number.

3969245923 is a deficient number, since it is larger than the sum of its proper divisors (215237).

3969245923 is a wasteful number, since it uses less digits than its factorization.

3969245923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215236.

The product of its digits is 3149280, while the sum is 52.

The square root of 3969245923 is about 63001.9517396088. The cubic root of 3969245923 is about 1583.3223264042.

The spelling of 3969245923 in words is "three billion, nine hundred sixty-nine million, two hundred forty-five thousand, nine hundred twenty-three".