916459421 has 4 divisors (see below), whose sum is σ = 948061500. Its totient is φ = 884857344.

The previous prime is 916459391. The next prime is 916459441. The reversal of 916459421 is 124954619.

916459421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 611572900 + 304886521 = 24730^2 + 17461^2 .

It is a cyclic number.

It is not a de Polignac number, because 916459421 - 2¹⁴ = 916443037 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 (916459441) 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, 15800996 + ... + 15801053.

It is an arithmetic number, because the mean of its divisors is an integer number (237015375).

Almost surely, 2^916459421 is an apocalyptic number.

It is an amenable number.

916459421 is a deficient number, since it is larger than the sum of its proper divisors (31602079).

916459421 is a wasteful number, since it uses less digits than its factorization.

916459421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31602078.

The product of its digits is 77760, while the sum is 41.

The square root of 916459421 is about 30273.0807979631. The cubic root of 916459421 is about 971.3395673553.

The spelling of 916459421 in words is "nine hundred sixteen million, four hundred fifty-nine thousand, four hundred twenty-one".