416473721 has 4 divisors (see below), whose sum is σ = 425334912. Its totient is φ = 407612532.

The previous prime is 416473691. The next prime is 416473763. The reversal of 416473721 is 127374614.

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 an emirpimes, since its reverse is a distinct semiprime: 127374614 = 2 ⋅63687307.

It is a cyclic number.

It is not a de Polignac number, because 416473721 - 2¹⁴ = 416457337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (416473621) 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, 4430525 + ... + 4430618.

It is an arithmetic number, because the mean of its divisors is an integer number (106333728).

Almost surely, 2^416473721 is an apocalyptic number.

It is an amenable number.

416473721 is a deficient number, since it is larger than the sum of its proper divisors (8861191).

416473721 is an equidigital number, since it uses as much as digits as its factorization.

416473721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8861190.

The product of its digits is 28224, while the sum is 35.

The square root of 416473721 is about 20407.6877916142. The cubic root of 416473721 is about 746.7854842758.

The spelling of 416473721 in words is "four hundred sixteen million, four hundred seventy-three thousand, seven hundred twenty-one".