4639281 has 8 divisors (see below), whose sum is σ = 6278304. Its totient is φ = 3046560.

The previous prime is 4639277. The next prime is 4639289. The reversal of 4639281 is 1829364.

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

It is not a de Polignac number, because 4639281 - 2² = 4639277 is a prime.

It is a super-2 number, since 2×4639281² = 43045856393922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4639289) 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, 11340 + ... + 11741.

It is an arithmetic number, because the mean of its divisors is an integer number (784788).

Almost surely, 2^4639281 is an apocalyptic number.

It is an amenable number.

4639281 is a deficient number, since it is larger than the sum of its proper divisors (1639023).

4639281 is a wasteful number, since it uses less digits than its factorization.

4639281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23151.

The product of its digits is 10368, while the sum is 33.

The square root of 4639281 is about 2153.8990227028. The cubic root of 4639281 is about 166.7824027235.

The spelling of 4639281 in words is "four million, six hundred thirty-nine thousand, two hundred eighty-one".