3977473 has 4 divisors (see below), whose sum is σ = 4211460. Its totient is φ = 3743488.

The previous prime is 3977471. The next prime is 3977483. The reversal of 3977473 is 3747793.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3747793 = 7 ⋅535399.

It can be written as a sum of positive squares in 2 ways, for example, as 2930944 + 1046529 = 1712^2 + 1023^2 .

It is a cyclic number.

It is not a de Polignac number, because 3977473 - 2¹ = 3977471 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

3977473 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3977471) 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, 116968 + ... + 117001.

It is an arithmetic number, because the mean of its divisors is an integer number (1052865).

Almost surely, 2^3977473 is an apocalyptic number.

It is an amenable number.

3977473 is a deficient number, since it is larger than the sum of its proper divisors (233987).

3977473 is a wasteful number, since it uses less digits than its factorization.

3977473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233986.

The product of its digits is 111132, while the sum is 40.

The square root of 3977473 is about 1994.3602984416. The cubic root of 3977473 is about 158.4415491666.

The spelling of 3977473 in words is "three million, nine hundred seventy-seven thousand, four hundred seventy-three".