428099493 has 8 divisors (see below), whose sum is σ = 571244608. Its totient is φ = 285177024.

The previous prime is 428099467. The next prime is 428099519. The reversal of 428099493 is 394990824.

It is an interprime number because it is at equal distance from previous prime (428099467) and next prime (428099519).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 428099493 - 2⁸ = 428099237 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 (428099293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51121 + ... + 58902.

It is an arithmetic number, because the mean of its divisors is an integer number (71405576).

Almost surely, 2^428099493 is an apocalyptic number.

It is an amenable number.

428099493 is a deficient number, since it is larger than the sum of its proper divisors (143145115).

428099493 is a wasteful number, since it uses less digits than its factorization.

428099493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111323.

The product of its (nonzero) digits is 559872, while the sum is 48.

The square root of 428099493 is about 20690.5653136883. The cubic root of 428099493 is about 753.6705947831.

The spelling of 428099493 in words is "four hundred twenty-eight million, ninety-nine thousand, four hundred ninety-three".