4019438 has 4 divisors (see below), whose sum is σ = 6029160. Its totient is φ = 2009718.

The previous prime is 4019437. The next prime is 4019447. The reversal of 4019438 is 8349104.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 4019438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4019437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1004858 + ... + 1004861.

It is an arithmetic number, because the mean of its divisors is an integer number (1507290).

Almost surely, 2^4019438 is an apocalyptic number.

4019438 is a deficient number, since it is larger than the sum of its proper divisors (2009722).

4019438 is a wasteful number, since it uses less digits than its factorization.

4019438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2009721.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 4019438 is about 2004.8536106160. The cubic root of 4019438 is about 158.9968223196.

The spelling of 4019438 in words is "four million, nineteen thousand, four hundred thirty-eight".