4639091 has 4 divisors (see below), whose sum is σ = 4643400. Its totient is φ = 4634784.

The previous prime is 4639081. The next prime is 4639099. The reversal of 4639091 is 1909364.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 4639091 - 2¹⁴ = 4622707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4639099) 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, 1040 + ... + 3218.

It is an arithmetic number, because the mean of its divisors is an integer number (1160850).

Almost surely, 2^4639091 is an apocalyptic number.

4639091 is a deficient number, since it is larger than the sum of its proper divisors (4309).

4639091 is a wasteful number, since it uses less digits than its factorization.

4639091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4308.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 4639091 is about 2153.8549161910. The cubic root of 4639091 is about 166.7801258557.

The spelling of 4639091 in words is "four million, six hundred thirty-nine thousand, ninety-one".