3972492 has 36 divisors (see below), whose sum is σ = 10633896. Its totient is φ = 1246080.

The previous prime is 3972467. The next prime is 3972499. The reversal of 3972492 is 2942793.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an Ulam number.

It is a d-powerful number, because it can be written as 3¹³ + 9 + 7⁵ + 2¹¹ + 4⁹ + 9 + 2²¹ .

It is not an unprimeable number, because it can be changed into a prime (3972499) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2634 + ... + 3857.

It is an arithmetic number, because the mean of its divisors is an integer number (295386).

Almost surely, 2^3972492 is an apocalyptic number.

It is an amenable number.

3972492 is an abundant number, since it is smaller than the sum of its proper divisors (6661404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3972492 is a wasteful number, since it uses less digits than its factorization.

3972492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6518 (or 6513 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 3972492 is about 1993.1111358878. Note that the first 4 decimals coincide. The cubic root of 3972492 is about 158.3753826145.

The spelling of 3972492 in words is "three million, nine hundred seventy-two thousand, four hundred ninety-two".