40208464 has 10 divisors (see below), whose sum is σ = 77903930. Its totient is φ = 20104224.

The previous prime is 40208429. The next prime is 40208479. The reversal of 40208464 is 46480204.

It can be written as a sum of positive squares in only one way, i.e., 36240400 + 3968064 = 6020^2 + 1992^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1256499 + ... + 1256530.

It is an arithmetic number, because the mean of its divisors is an integer number (7790393).

Almost surely, 2^40208464 is an apocalyptic number.

It is an amenable number.

40208464 is a deficient number, since it is larger than the sum of its proper divisors (37695466).

40208464 is a wasteful number, since it uses less digits than its factorization.

40208464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2513037 (or 2513031 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

The square root of 40208464 is about 6341.0144298842. The cubic root of 40208464 is about 342.5882742613.

Adding to 40208464 its reverse (46480204), we get a palindrome (86688668).

The spelling of 40208464 in words is "forty million, two hundred eight thousand, four hundred sixty-four".