43490490 has 16 divisors (see below), whose sum is σ = 104377248. Its totient is φ = 11597456.

The previous prime is 43490477. The next prime is 43490507. The reversal of 43490490 is 9409434.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 724812 + ... + 724871.

It is an arithmetic number, because the mean of its divisors is an integer number (6523578).

Almost surely, 2^43490490 is an apocalyptic number.

43490490 is an abundant number, since it is smaller than the sum of its proper divisors (60886758).

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

43490490 is a wasteful number, since it uses less digits than its factorization.

43490490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1449693.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 43490490 is about 6594.7319884890. The cubic root of 43490490 is about 351.6668518476. Note that the first 3 decimals are identical.

The spelling of 43490490 in words is "forty-three million, four hundred ninety thousand, four hundred ninety".