3797981 has 4 divisors (see below), whose sum is σ = 4143264. Its totient is φ = 3452700.

The previous prime is 3797957. The next prime is 3797993. The reversal of 3797981 is 1897973.

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 3797981 - 2⁶ = 3797917 is a prime.

It is a super-2 number, since 2×3797981² = 28849319352722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3797951) 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, 172625 + ... + 172646.

It is an arithmetic number, because the mean of its divisors is an integer number (1035816).

Almost surely, 2^3797981 is an apocalyptic number.

It is an amenable number.

3797981 is a deficient number, since it is larger than the sum of its proper divisors (345283).

3797981 is a wasteful number, since it uses less digits than its factorization.

3797981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345282.

The product of its digits is 95256, while the sum is 44.

The square root of 3797981 is about 1948.8409375832. The cubic root of 3797981 is about 156.0214330622.

The spelling of 3797981 in words is "three million, seven hundred ninety-seven thousand, nine hundred eighty-one".