3972479 has 6 divisors (see below), whose sum is σ = 4621104. Its totient is φ = 3404940.

The previous prime is 3972467. The next prime is 3972499. The reversal of 3972479 is 9742793.

It is not a de Polignac number, because 3972479 - 2⁸ = 3972223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3972439) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40487 + ... + 40584.

It is an arithmetic number, because the mean of its divisors is an integer number (770184).

Almost surely, 2^3972479 is an apocalyptic number.

3972479 is a deficient number, since it is larger than the sum of its proper divisors (648625).

3972479 is an equidigital number, since it uses as much as digits as its factorization.

3972479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81085 (or 81078 counting only the distinct ones).

The product of its digits is 95256, while the sum is 41.

The square root of 3972479 is about 1993.1078746520. The cubic root of 3972479 is about 158.3752098529.

The spelling of 3972479 in words is "three million, nine hundred seventy-two thousand, four hundred seventy-nine".