4507994 has 4 divisors (see below), whose sum is σ = 6761994. Its totient is φ = 2253996.

The previous prime is 4507981. The next prime is 4507999. The reversal of 4507994 is 4997054.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4997054 = 2 ⋅2498527.

It can be written as a sum of positive squares in only one way, i.e., 3286969 + 1221025 = 1813^2 + 1105^2 .

It is not an unprimeable number, because it can be changed into a prime (4507999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1126997 + ... + 1127000.

Almost surely, 2^4507994 is an apocalyptic number.

4507994 is a deficient number, since it is larger than the sum of its proper divisors (2254000).

4507994 is a wasteful number, since it uses less digits than its factorization.

4507994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2253999.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 4507994 is about 2123.2037113758. The cubic root of 4507994 is about 165.1940661178.

The spelling of 4507994 in words is "four million, five hundred seven thousand, nine hundred ninety-four".