3972069 has 12 divisors (see below), whose sum is σ = 5791500. Its totient is φ = 2623104.

The previous prime is 3972037. The next prime is 3972071. The reversal of 3972069 is 9602793.

It can be written as a sum of positive squares in 2 ways, for example, as 1855044 + 2117025 = 1362^2 + 1455^2 .

It is not a de Polignac number, because 3972069 - 2⁵ = 3972037 is a prime.

It is a super-2 number, since 2×3972069² = 31554664281522, which contains 22 as substring.

3972069 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3972019) 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, 1044 + ... + 3005.

It is an arithmetic number, because the mean of its divisors is an integer number (482625).

Almost surely, 2^3972069 is an apocalyptic number.

It is an amenable number.

3972069 is a deficient number, since it is larger than the sum of its proper divisors (1819431).

3972069 is a wasteful number, since it uses less digits than its factorization.

3972069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4164 (or 4161 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 3972069 is about 1993.0050175551. The cubic root of 3972069 is about 158.3697610244.

The spelling of 3972069 in words is "three million, nine hundred seventy-two thousand, sixty-nine".