4022919 has 8 divisors (see below), whose sum is σ = 5959920. Its totient is φ = 2681928.

The previous prime is 4022911. The next prime is 4022929. The reversal of 4022919 is 9192204.

It is not a de Polignac number, because 4022919 - 2³ = 4022911 is a prime.

It is a super-2 number, since 2×4022919² = 32367754561122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 148997 = 4022919 / (4 + 0 + 2 + 2 + 9 + 1 + 9).

It is a junction number, because it is equal to n+sod(n) for n = 4022892 and 4022901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4022911) 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, 74472 + ... + 74525.

It is an arithmetic number, because the mean of its divisors is an integer number (744990).

Almost surely, 2^4022919 is an apocalyptic number.

4022919 is a deficient number, since it is larger than the sum of its proper divisors (1937001).

4022919 is a wasteful number, since it uses less digits than its factorization.

4022919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149006 (or 149000 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 4022919 is about 2005.7215659209. The cubic root of 4022919 is about 159.0427083564.

It can be divided in two parts, 402 and 2919, that added together give a triangular number (3321 = T₈₁).

The spelling of 4022919 in words is "four million, twenty-two thousand, nine hundred nineteen".