3972261469 has 4 divisors (see below), whose sum is σ = 4333376160. Its totient is φ = 3611146780.

The previous prime is 3972261431. The next prime is 3972261511. The reversal of 3972261469 is 9641622793.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3972261469 - 2¹³ = 3972253277 is a prime.

It is a super-2 number, since 2×3972261469² = 31557722356204075922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3972261569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180557329 + ... + 180557350.

It is an arithmetic number, because the mean of its divisors is an integer number (1083344040).

Almost surely, 2^3972261469 is an apocalyptic number.

It is an amenable number.

3972261469 is a deficient number, since it is larger than the sum of its proper divisors (361114691).

3972261469 is a wasteful number, since it uses less digits than its factorization.

3972261469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361114690.

The product of its digits is 979776, while the sum is 49.

The square root of 3972261469 is about 63025.8793591966. The cubic root of 3972261469 is about 1583.7231895055.

The spelling of 3972261469 in words is "three billion, nine hundred seventy-two million, two hundred sixty-one thousand, four hundred sixty-nine".