4069891 has 6 divisors (see below), whose sum is σ = 4734420. Its totient is φ = 3488436.

The previous prime is 4069867. The next prime is 4069913. The reversal of 4069891 is 1989604.

It is not a de Polignac number, because 4069891 - 2¹³ = 4061699 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4069891.

It is not an unprimeable number, because it can be changed into a prime (4069801) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 41481 + ... + 41578.

It is an arithmetic number, because the mean of its divisors is an integer number (789070).

Almost surely, 2^4069891 is an apocalyptic number.

4069891 is a deficient number, since it is larger than the sum of its proper divisors (664529).

4069891 is an equidigital number, since it uses as much as digits as its factorization.

4069891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83073 (or 83066 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 4069891 is about 2017.3970853553. The cubic root of 4069891 is about 159.6593141596.

The spelling of 4069891 in words is "four million, sixty-nine thousand, eight hundred ninety-one".