4149905 has 8 divisors (see below), whose sum is σ = 4991784. Its totient is φ = 3312000.

The previous prime is 4149889. The next prime is 4149907. The reversal of 4149905 is 5099414.

It can be written as a sum of positive squares in 4 ways, for example, as 906304 + 3243601 = 952^2 + 1801^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4149905 - 2⁴ = 4149889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4149907) 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, 2315 + ... + 3695.

It is an arithmetic number, because the mean of its divisors is an integer number (623973).

Almost surely, 2^4149905 is an apocalyptic number.

It is an amenable number.

4149905 is a deficient number, since it is larger than the sum of its proper divisors (841879).

4149905 is a wasteful number, since it uses less digits than its factorization.

4149905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1987.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 4149905 is about 2037.1315617799. The cubic root of 4149905 is about 160.6988312947.

The spelling of 4149905 in words is "four million, one hundred forty-nine thousand, nine hundred five".