40670384 has 10 divisors (see below), whose sum is σ = 78798900. Its totient is φ = 20335184.

The previous prime is 40670381. The next prime is 40670423. The reversal of 40670384 is 48307604.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 40670384.

It is not an unprimeable number, because it can be changed into a prime (40670381) 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, 1270934 + ... + 1270965.

It is an arithmetic number, because the mean of its divisors is an integer number (7879890).

Almost surely, 2^40670384 is an apocalyptic number.

It is an amenable number.

40670384 is a deficient number, since it is larger than the sum of its proper divisors (38128516).

40670384 is a wasteful number, since it uses less digits than its factorization.

40670384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2541907 (or 2541901 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 40670384 is about 6377.3336120984. Note that the first 3 decimals coincide. The cubic root of 40670384 is about 343.8951816936.

Adding to 40670384 its reverse (48307604), we get a palindrome (88977988).

The spelling of 40670384 in words is "forty million, six hundred seventy thousand, three hundred eighty-four".