928419409 has 4 divisors (see below), whose sum is σ = 933548980. Its totient is φ = 923289840.

The previous prime is 928419383. The next prime is 928419461. The reversal of 928419409 is 904914829.

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 286557184 + 641862225 = 16928^2 + 25335^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-928419409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (928419209) 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, 2564514 + ... + 2564875.

It is an arithmetic number, because the mean of its divisors is an integer number (233387245).

Almost surely, 2^928419409 is an apocalyptic number.

It is an amenable number.

928419409 is a deficient number, since it is larger than the sum of its proper divisors (5129571).

928419409 is a wasteful number, since it uses less digits than its factorization.

928419409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5129570.

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 928419409 is about 30469.9755333016. The cubic root of 928419409 is about 975.5467138517.

The spelling of 928419409 in words is "nine hundred twenty-eight million, four hundred nineteen thousand, four hundred nine".