4899990 has 32 divisors (see below), whose sum is σ = 11827296. Its totient is φ = 1299200.

The previous prime is 4899971. The next prime is 4899997. The reversal of 4899990 is 999984.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4899997) 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, 6640 + ... + 7340.

It is an arithmetic number, because the mean of its divisors is an integer number (369603).

Almost surely, 2^4899990 is an apocalyptic number.

4899990 is an abundant number, since it is smaller than the sum of its proper divisors (6927306).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4899990 is a wasteful number, since it uses less digits than its factorization.

4899990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 944.

The product of its (nonzero) digits is 209952, while the sum is 48.

The square root of 4899990 is about 2213.5921033470. The cubic root of 4899990 is about 169.8498096799.

The spelling of 4899990 in words is "four million, eight hundred ninety-nine thousand, nine hundred ninety".