416981621 has 24 divisors (see below), whose sum is σ = 503325504. Its totient is φ = 344191680.

The previous prime is 416981611. The next prime is 416981641. The reversal of 416981621 is 126189614.

It is not a de Polignac number, because 416981621 - 2¹⁸ = 416719477 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 (416981611) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 152456 + ... + 155166.

It is an arithmetic number, because the mean of its divisors is an integer number (20971896).

Almost surely, 2^416981621 is an apocalyptic number.

It is an amenable number.

416981621 is a deficient number, since it is larger than the sum of its proper divisors (86343883).

416981621 is a wasteful number, since it uses less digits than its factorization.

416981621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2841 (or 2834 counting only the distinct ones).

The product of its digits is 20736, while the sum is 38.

The square root of 416981621 is about 20420.1278399524. The cubic root of 416981621 is about 747.0889354079.

The spelling of 416981621 in words is "four hundred sixteen million, nine hundred eighty-one thousand, six hundred twenty-one".