4019913 has 6 divisors (see below), whose sum is σ = 5806554. Its totient is φ = 2679936.

The previous prime is 4019909. The next prime is 4019993. The reversal of 4019913 is 3199104.

It can be written as a sum of positive squares in only one way, i.e., 2082249 + 1937664 = 1443^2 + 1392^2 .

It is not a de Polignac number, because 4019913 - 2² = 4019909 is a prime.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (4019993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 223320 + ... + 223337.

It is an arithmetic number, because the mean of its divisors is an integer number (967759).

Almost surely, 2^4019913 is an apocalyptic number.

It is an amenable number.

4019913 is a deficient number, since it is larger than the sum of its proper divisors (1786641).

4019913 is a wasteful number, since it uses less digits than its factorization.

4019913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446663 (or 446660 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 4019913 is about 2004.9720696309. The cubic root of 4019913 is about 159.0030852611.

The spelling of 4019913 in words is "four million, nineteen thousand, nine hundred thirteen".