40331490 has 64 divisors (see below), whose sum is σ = 102729600. Its totient is φ = 10105344.

The previous prime is 40331483. The next prime is 40331539. The reversal of 40331490 is 9413304.

40331490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 40331490.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 98406 + ... + 98814.

It is an arithmetic number, because the mean of its divisors is an integer number (1605150).

Almost surely, 2^40331490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40331490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51364800).

40331490 is an abundant number, since it is smaller than the sum of its proper divisors (62398110).

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

40331490 is a wasteful number, since it uses less digits than its factorization.

40331490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 40331490 is about 6350.7078345646. The cubic root of 40331490 is about 342.9373247489.

Adding to 40331490 its reverse (9413304), we get a palindrome (49744794).

The spelling of 40331490 in words is "forty million, three hundred thirty-one thousand, four hundred ninety".