40382621 has 4 divisors (see below), whose sum is σ = 40397532. Its totient is φ = 40367712.

The previous prime is 40382603. The next prime is 40382627. The reversal of 40382621 is 12628304.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7778521 + 32604100 = 2789^2 + 5710^2 .

It is a cyclic number.

It is not a de Polignac number, because 40382621 - 2¹⁸ = 40120477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40382627) 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 in 3 ways as a sum of consecutive naturals, for example, 2120 + ... + 9233.

It is an arithmetic number, because the mean of its divisors is an integer number (10099383).

Almost surely, 2^40382621 is an apocalyptic number.

It is an amenable number.

40382621 is a deficient number, since it is larger than the sum of its proper divisors (14911).

40382621 is a wasteful number, since it uses less digits than its factorization.

40382621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14910.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 40382621 is about 6354.7321737427. The cubic root of 40382621 is about 343.0821852832.

The spelling of 40382621 in words is "forty million, three hundred eighty-two thousand, six hundred twenty-one".