4149421369 has 4 divisors (see below), whose sum is σ = 4149748260. Its totient is φ = 4149094480.

The previous prime is 4149421363. The next prime is 4149421391. The reversal of 4149421369 is 9631249414.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3670905744 + 478515625 = 60588^2 + 21875^2 .

It is a cyclic number.

It is not a de Polignac number, because 4149421369 - 2⁹ = 4149420857 is a prime.

It is a super-2 number, since 2×4149421369² = 34435395395027668322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4149421363) 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, 143602 + ... + 170059.

It is an arithmetic number, because the mean of its divisors is an integer number (1037437065).

Almost surely, 2^4149421369 is an apocalyptic number.

It is an amenable number.

4149421369 is a deficient number, since it is larger than the sum of its proper divisors (326891).

4149421369 is a wasteful number, since it uses less digits than its factorization.

4149421369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326890.

The product of its digits is 186624, while the sum is 43.

The square root of 4149421369 is about 64416.0024295206. The cubic root of 4149421369 is about 1606.9258842437.

The spelling of 4149421369 in words is "four billion, one hundred forty-nine million, four hundred twenty-one thousand, three hundred sixty-nine".