3972830 has 8 divisors (see below), whose sum is σ = 7151112. Its totient is φ = 1589128.

The previous prime is 3972817. The next prime is 3972833. The reversal of 3972830 is 382793.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3972833) 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, 198632 + ... + 198651.

It is an arithmetic number, because the mean of its divisors is an integer number (893889).

Almost surely, 2^3972830 is an apocalyptic number.

3972830 is a deficient number, since it is larger than the sum of its proper divisors (3178282).

3972830 is a wasteful number, since it uses less digits than its factorization.

3972830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397290.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 3972830 is about 1993.1959261447. The cubic root of 3972830 is about 158.3798742838.

The spelling of 3972830 in words is "three million, nine hundred seventy-two thousand, eight hundred thirty".