416912921 has 4 divisors (see below), whose sum is σ = 416955600. Its totient is φ = 416870244.

The previous prime is 416912911. The next prime is 416912959. The reversal of 416912921 is 129219614.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 416912921 - 2¹⁸ = 416650777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (416912911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1370 + ... + 28908.

It is an arithmetic number, because the mean of its divisors is an integer number (104238900).

Almost surely, 2^416912921 is an apocalyptic number.

It is an amenable number.

416912921 is a deficient number, since it is larger than the sum of its proper divisors (42679).

416912921 is a wasteful number, since it uses less digits than its factorization.

416912921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42678.

The product of its digits is 7776, while the sum is 35.

The square root of 416912921 is about 20418.4456068526. The cubic root of 416912921 is about 747.0479041600.

The spelling of 416912921 in words is "four hundred sixteen million, nine hundred twelve thousand, nine hundred twenty-one".