3973457 has 4 divisors (see below), whose sum is σ = 4146240. Its totient is φ = 3800676.

The previous prime is 3973447. The next prime is 3973469. The reversal of 3973457 is 7543793.

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 3973457 - 2¹⁸ = 3711313 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3973457.

It is not an unprimeable number, because it can be changed into a prime (3973447) 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, 86357 + ... + 86402.

It is an arithmetic number, because the mean of its divisors is an integer number (1036560).

Almost surely, 2^3973457 is an apocalyptic number.

It is an amenable number.

3973457 is a deficient number, since it is larger than the sum of its proper divisors (172783).

3973457 is a wasteful number, since it uses less digits than its factorization.

3973457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172782.

The product of its digits is 79380, while the sum is 38.

The square root of 3973457 is about 1993.3532050292. The cubic root of 3973457 is about 158.3882057887.

The spelling of 3973457 in words is "three million, nine hundred seventy-three thousand, four hundred fifty-seven".