4019641 has 4 divisors (see below), whose sum is σ = 4194432. Its totient is φ = 3844852.

The previous prime is 4019627. The next prime is 4019647. The reversal of 4019641 is 1469104.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4019641 - 2⁷ = 4019513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4019647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87361 + ... + 87406.

It is an arithmetic number, because the mean of its divisors is an integer number (1048608).

Almost surely, 2^4019641 is an apocalyptic number.

It is an amenable number.

4019641 is a deficient number, since it is larger than the sum of its proper divisors (174791).

4019641 is a wasteful number, since it uses less digits than its factorization.

4019641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174790.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 4019641 is about 2004.9042371146. The cubic root of 4019641 is about 158.9994989634. Note that the first 3 decimals are identical.

The spelling of 4019641 in words is "four million, nineteen thousand, six hundred forty-one".