3972549 has 8 divisors (see below), whose sum is σ = 6053440. Its totient is φ = 2270016.

The previous prime is 3972541. The next prime is 3972569. The reversal of 3972549 is 9452793.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3972549 - 2³ = 3972541 is a prime.

It is a super-2 number, since 2×3972549² = 31562291114802, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3972541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94564 + ... + 94605.

It is an arithmetic number, because the mean of its divisors is an integer number (756680).

Almost surely, 2^3972549 is an apocalyptic number.

It is an amenable number.

3972549 is a deficient number, since it is larger than the sum of its proper divisors (2080891).

3972549 is a wasteful number, since it uses less digits than its factorization.

3972549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189179.

The product of its digits is 68040, while the sum is 39.

The square root of 3972549 is about 1993.1254350893. The cubic root of 3972549 is about 158.3761401032.

The spelling of 3972549 in words is "three million, nine hundred seventy-two thousand, five hundred forty-nine".