40309332 has 48 divisors (see below), whose sum is σ = 107907072. Its totient is φ = 11472480.

The previous prime is 40309319. The next prime is 40309337. The reversal of 40309332 is 23390304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40309337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25353 + ... + 26895.

It is an arithmetic number, because the mean of its divisors is an integer number (2248064).

Almost surely, 2^40309332 is an apocalyptic number.

40309332 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

40309332 is an abundant number, since it is smaller than the sum of its proper divisors (67597740).

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

40309332 is a wasteful number, since it uses less digits than its factorization.

40309332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1868 (or 1866 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 24.

The square root of 40309332 is about 6348.9630649422. The cubic root of 40309332 is about 342.8745103306.

Adding to 40309332 its reverse (23390304), we get a palindrome (63699636).

The spelling of 40309332 in words is "forty million, three hundred nine thousand, three hundred thirty-two".