3962021 has 8 divisors (see below), whose sum is σ = 4540224. Its totient is φ = 3386880.

The previous prime is 3961987. The next prime is 3962029. The reversal of 3962021 is 1202693.

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

It is not a de Polignac number, because 3962021 - 2¹⁰ = 3960997 is a prime.

It is a super-2 number, since 2×3962021² = 31395220808882, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3962029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4046 + ... + 4928.

It is an arithmetic number, because the mean of its divisors is an integer number (567528).

Almost surely, 2^3962021 is an apocalyptic number.

It is an amenable number.

3962021 is a deficient number, since it is larger than the sum of its proper divisors (578203).

3962021 is an equidigital number, since it uses as much as digits as its factorization.

3962021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1531.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 3962021 is about 1990.4826047971. The cubic root of 3962021 is about 158.2361074998.

The spelling of 3962021 in words is "three million, nine hundred sixty-two thousand, twenty-one".