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4990 = 25499
BaseRepresentation
bin1001101111110
320211211
41031332
5124430
635034
720356
oct11576
96754
104990
113827
122a7a
13236b
141b66
15172a
hex137e

4990 has 8 divisors (see below), whose sum is σ = 9000. Its totient is φ = 1992.

The previous prime is 4987. The next prime is 4993. The reversal of 4990 is 994.

It is an interprime number because it is at equal distance from previous prime (4987) and next prime (4993).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a plaindrome in base 13 and base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240 + ... + 259.

It is an arithmetic number, because the mean of its divisors is an integer number (1125).

4990 is a deficient number, since it is larger than the sum of its proper divisors (4010).

4990 is a wasteful number, since it uses less digits than its factorization.

4990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 4990 is about 70.6399320498. The cubic root of 4990 is about 17.0883520188.

The spelling of 4990 in words is "four thousand, nine hundred ninety".

Divisors: 1 2 5 10 499 998 2495 4990