4992390 has 96 divisors (see below), whose sum is σ = 14859936. Its totient is φ = 1152000.

The previous prime is 4992389. The next prime is 4992401. The reversal of 4992390 is 932994.

It is a d-powerful number, because it can be written as 4⁷ + 9³ + 9⁵ + 2¹⁷ + 3⁷ + 9⁷ + 0 .

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19765 + ... + 20015.

It is an arithmetic number, because the mean of its divisors is an integer number (154791).

Almost surely, 2^4992390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4992390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7429968).

4992390 is an abundant number, since it is smaller than the sum of its proper divisors (9867546).

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

4992390 is a wasteful number, since it uses less digits than its factorization.

4992390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294 (or 291 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 4992390 is about 2234.3656817988. The cubic root of 4992390 is about 170.9107978381.

The spelling of 4992390 in words is "four million, nine hundred ninety-two thousand, three hundred ninety".