4390787 has 8 divisors (see below), whose sum is σ = 4532736. Its totient is φ = 4250952.

The previous prime is 4390781. The next prime is 4390801. The reversal of 4390787 is 7870934.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4390787 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4390787.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4390781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4388 + ... + 5294.

It is an arithmetic number, because the mean of its divisors is an integer number (566592).

Almost surely, 2^4390787 is an apocalyptic number.

4390787 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

4390787 is a deficient number, since it is larger than the sum of its proper divisors (141949).

4390787 is a wasteful number, since it uses less digits than its factorization.

4390787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1057.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 4390787 is about 2095.4204828626. The cubic root of 4390787 is about 163.7498044012.

The spelling of 4390787 in words is "four million, three hundred ninety thousand, seven hundred eighty-seven".