428091349 has 8 divisors (see below), whose sum is σ = 489438720. Its totient is φ = 366791856.

The previous prime is 428091317. The next prime is 428091353. The reversal of 428091349 is 943190824.

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

It is a cyclic number.

It is not a de Polignac number, because 428091349 - 2⁵ = 428091317 is a prime.

It is a super-3 number, since 3×428091349³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428091379) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9852 + ... + 30874.

It is an arithmetic number, because the mean of its divisors is an integer number (61179840).

Almost surely, 2^428091349 is an apocalyptic number.

It is an amenable number.

428091349 is a deficient number, since it is larger than the sum of its proper divisors (61347371).

428091349 is a wasteful number, since it uses less digits than its factorization.

428091349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23939.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 428091349 is about 20690.3685080764. The cubic root of 428091349 is about 753.6658155730.

The spelling of 428091349 in words is "four hundred twenty-eight million, ninety-one thousand, three hundred forty-nine".