4897890 has 24 divisors (see below), whose sum is σ = 12734748. Its totient is φ = 1306080.

The previous prime is 4897861. The next prime is 4897891. The reversal of 4897890 is 987984.

It can be written as a sum of positive squares in 2 ways, for example, as 4782969 + 114921 = 2187^2 + 339^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4897891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27121 + ... + 27300.

Almost surely, 2^4897890 is an apocalyptic number.

4897890 is an abundant number, since it is smaller than the sum of its proper divisors (7836858).

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

4897890 is a wasteful number, since it uses less digits than its factorization.

4897890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54434 (or 54431 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 4897890 is about 2213.1177103805. The cubic root of 4897890 is about 169.8255419047.

The spelling of 4897890 in words is "four million, eight hundred ninety-seven thousand, eight hundred ninety".