4990605 has 16 divisors (see below), whose sum is σ = 8455104. Its totient is φ = 2504960.

The previous prime is 4990603. The next prime is 4990613. The reversal of 4990605 is 5060994.

It is a happy number.

It is not a de Polignac number, because 4990605 - 2¹ = 4990603 is a prime.

It is a super-2 number, since 2×4990605² = 49812276532050, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4990603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9531 + ... + 10040.

It is an arithmetic number, because the mean of its divisors is an integer number (528444).

Almost surely, 2^4990605 is an apocalyptic number.

It is an amenable number.

4990605 is a deficient number, since it is larger than the sum of its proper divisors (3464499).

4990605 is a wasteful number, since it uses less digits than its factorization.

4990605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19596.

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 4990605 is about 2233.9662038625. The cubic root of 4990605 is about 170.8904260229.

The spelling of 4990605 in words is "four million, nine hundred ninety thousand, six hundred five".