7854990 has 64 divisors (see below), whose sum is σ = 22159872. Its totient is φ = 1756800.

The previous prime is 7854967. The next prime is 7854991. The reversal of 7854990 is 994587.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7854991) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3375 + ... + 5205.

It is an arithmetic number, because the mean of its divisors is an integer number (346248).

Almost surely, 2^7854990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7854990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11079936).

7854990 is an abundant number, since it is smaller than the sum of its proper divisors (14304882).

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

7854990 is a wasteful number, since it uses less digits than its factorization.

7854990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1865.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 7854990 is about 2802.6755074393. The cubic root of 7854990 is about 198.7842075530.

It can be divided in two parts, 785 and 4990, that added together give a palindrome (5775).

The spelling of 7854990 in words is "seven million, eight hundred fifty-four thousand, nine hundred ninety".