40008464 has 10 divisors (see below), whose sum is σ = 77516430. Its totient is φ = 20004224.

The previous prime is 40008461. The next prime is 40008473. The reversal of 40008464 is 46480004.

It can be written as a sum of positive squares in only one way, i.e., 28174864 + 11833600 = 5308^2 + 3440^2 .

It is not an unprimeable number, because it can be changed into a prime (40008461) 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 as a sum of consecutive naturals, namely, 1250249 + ... + 1250280.

It is an arithmetic number, because the mean of its divisors is an integer number (7751643).

Almost surely, 2^40008464 is an apocalyptic number.

It is an amenable number.

40008464 is a deficient number, since it is larger than the sum of its proper divisors (37507966).

40008464 is a wasteful number, since it uses less digits than its factorization.

40008464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2500537 (or 2500531 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 40008464 is about 6325.2244228960. The cubic root of 40008464 is about 342.0193096948.

Adding to 40008464 its reverse (46480004), we get a palindrome (86488468).

The spelling of 40008464 in words is "forty million, eight thousand, four hundred sixty-four".