3972477 has 4 divisors (see below), whose sum is σ = 5296640. Its totient is φ = 2648316.

The previous prime is 3972467. The next prime is 3972499. The reversal of 3972477 is 7742793.

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, and also an emirpimes, since its reverse is a distinct semiprime: 7742793 = 3 ⋅2580931.

It is not a de Polignac number, because 3972477 - 2⁶ = 3972413 is a prime.

It is a d-powerful number, because it can be written as 3³ + 9³ + 7² + 2²¹ + 4¹⁰ + 7⁴ + 7⁷ .

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3972427) 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, 662077 + ... + 662082.

It is an arithmetic number, because the mean of its divisors is an integer number (1324160).

Almost surely, 2^3972477 is an apocalyptic number.

It is an amenable number.

3972477 is a deficient number, since it is larger than the sum of its proper divisors (1324163).

3972477 is a wasteful number, since it uses less digits than its factorization.

3972477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1324162.

The product of its digits is 74088, while the sum is 39.

The square root of 3972477 is about 1993.1073729230. The cubic root of 3972477 is about 158.3751832742.

The spelling of 3972477 in words is "three million, nine hundred seventy-two thousand, four hundred seventy-seven".