416506421 has 4 divisors (see below), whose sum is σ = 429942144. Its totient is φ = 403070700.

The previous prime is 416506417. The next prime is 416506451. The reversal of 416506421 is 124605614.

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.

It is a cyclic number.

It is not a de Polignac number, because 416506421 - 2² = 416506417 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 (416506451) 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, 6717815 + ... + 6717876.

It is an arithmetic number, because the mean of its divisors is an integer number (107485536).

Almost surely, 2^416506421 is an apocalyptic number.

It is an amenable number.

416506421 is a deficient number, since it is larger than the sum of its proper divisors (13435723).

416506421 is a wasteful number, since it uses less digits than its factorization.

416506421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13435722.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 416506421 is about 20408.4889445544. The cubic root of 416506421 is about 746.8050287232.

The spelling of 416506421 in words is "four hundred sixteen million, five hundred six thousand, four hundred twenty-one".