3920069 has 2 divisors, whose sum is σ = 3920070. Its totient is φ = 3920068.

The previous prime is 3920057. The next prime is 3920071. The reversal of 3920069 is 9600293.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3751969 + 168100 = 1937^2 + 410^2 .

It is an emirp because it is prime and its reverse (9600293) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3920069 - 2⁸ = 3919813 is a prime.

It is a super-2 number, since 2×3920069² = 30733881929522, which contains 22 as substring.

Together with 3920071, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3920029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1960034 + 1960035.

It is an arithmetic number, because the mean of its divisors is an integer number (1960035).

Almost surely, 2^3920069 is an apocalyptic number.

It is an amenable number.

3920069 is a deficient number, since it is larger than the sum of its proper divisors (1).

3920069 is an equidigital number, since it uses as much as digits as its factorization.

3920069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 3920069 is about 1979.9164123770. The cubic root of 3920069 is about 157.6756283889.

The spelling of 3920069 in words is "three million, nine hundred twenty thousand, sixty-nine".