4080090 has 32 divisors (see below), whose sum is σ = 11191680. Its totient is φ = 932544.

The previous prime is 4080077. The next prime is 4080103. The reversal of 4080090 is 900804.

It is an interprime number because it is at equal distance from previous prime (4080077) and next prime (4080103).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9505 + ... + 9924.

It is an arithmetic number, because the mean of its divisors is an integer number (349740).

Almost surely, 2^4080090 is an apocalyptic number.

4080090 is an abundant number, since it is smaller than the sum of its proper divisors (7111590).

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

4080090 is a wasteful number, since it uses less digits than its factorization.

4080090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19446.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 4080090 is about 2019.9232658693. The cubic root of 4080090 is about 159.7925697372.

Adding to 4080090 its reverse (900804), we get a palindrome (4980894).

The spelling of 4080090 in words is "four million, eighty thousand, ninety".