40784621 has 8 divisors (see below), whose sum is σ = 43089600. Its totient is φ = 38495520.

The previous prime is 40784617. The next prime is 40784657. The reversal of 40784621 is 12648704.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40784621 - 2² = 40784617 is a prime.

It is a super-2 number, since 2×40784621² = 3326770620227282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40784021) 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, 1520 + ... + 9158.

It is an arithmetic number, because the mean of its divisors is an integer number (5386200).

Almost surely, 2^40784621 is an apocalyptic number.

It is an amenable number.

40784621 is a deficient number, since it is larger than the sum of its proper divisors (2304979).

40784621 is a wasteful number, since it uses less digits than its factorization.

40784621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7939.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 40784621 is about 6386.2838176830. The cubic root of 40784621 is about 344.2168639998.

The spelling of 40784621 in words is "forty million, seven hundred eighty-four thousand, six hundred twenty-one".