40464340 has 24 divisors (see below), whose sum is σ = 97114752. Its totient is φ = 13873440.

The previous prime is 40464323. The next prime is 40464341. The reversal of 40464340 is 4346404.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40464341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144376 + ... + 144655.

It is an arithmetic number, because the mean of its divisors is an integer number (4046448).

Almost surely, 2^40464340 is an apocalyptic number.

It is an amenable number.

40464340 is an abundant number, since it is smaller than the sum of its proper divisors (56650412).

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

40464340 is a wasteful number, since it uses less digits than its factorization.

40464340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289047 (or 289045 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 40464340 is about 6361.1586994824. The cubic root of 40464340 is about 343.3134517870.

It can be divided in two parts, 40464 and 340, that added together give a palindrome (40804).

The spelling of 40464340 in words is "forty million, four hundred sixty-four thousand, three hundred forty".