40399304 has 32 divisors (see below), whose sum is σ = 83160000. Its totient is φ = 18246720.

The previous prime is 40399297. The next prime is 40399313.

40399304 is nontrivially palindromic in base 10.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 13322 + ... + 16070.

It is an arithmetic number, because the mean of its divisors is an integer number (2598750).

Almost surely, 2^40399304 is an apocalyptic number.

40399304 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40399304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41580000).

40399304 is an abundant number, since it is smaller than the sum of its proper divisors (42760696).

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

40399304 is a wasteful number, since it uses less digits than its factorization.

40399304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2933 (or 2929 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 40399304 is about 6356.0446820330. The cubic root of 40399304 is about 343.1294238555.

The spelling of 40399304 in words is "forty million, three hundred ninety-nine thousand, three hundred four".