3957797 has 4 divisors (see below), whose sum is σ = 3972780. Its totient is φ = 3942816.

The previous prime is 3957781. The next prime is 3957799. The reversal of 3957797 is 7977593.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7977593 = 13 ⋅613661.

It can be written as a sum of positive squares in 2 ways, for example, as 1442401 + 2515396 = 1201^2 + 1586^2 .

It is a cyclic number.

It is not a de Polignac number, because 3957797 - 2⁴ = 3957781 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 (3957799) 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, 7088 + ... + 7625.

It is an arithmetic number, because the mean of its divisors is an integer number (993195).

Almost surely, 2^3957797 is an apocalyptic number.

It is an amenable number.

3957797 is a deficient number, since it is larger than the sum of its proper divisors (14983).

3957797 is a wasteful number, since it uses less digits than its factorization.

3957797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14982.

The product of its digits is 416745, while the sum is 47.

The square root of 3957797 is about 1989.4212726318. The cubic root of 3957797 is about 158.1798544758.

It can be divided in two parts, 395 and 7797, that added together give a 13-th power (8192 = 2¹³).

The spelling of 3957797 in words is "three million, nine hundred fifty-seven thousand, seven hundred ninety-seven".