309421801 has 8 divisors (see below), whose sum is σ = 335432384. Its totient is φ = 283726800.

The previous prime is 309421799. The next prime is 309421813. The reversal of 309421801 is 108124903.

It is a happy number.

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 309421801 - 2¹ = 309421799 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 309421801.

It is not an unprimeable number, because it can be changed into a prime (309421831) 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, 76851 + ... + 80776.

It is an arithmetic number, because the mean of its divisors is an integer number (41929048).

Almost surely, 2^309421801 is an apocalyptic number.

It is an amenable number.

309421801 is a deficient number, since it is larger than the sum of its proper divisors (26010583).

309421801 is a wasteful number, since it uses less digits than its factorization.

309421801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157791.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 309421801 is about 17590.3894499241. The cubic root of 309421801 is about 676.3689099282.

The spelling of 309421801 in words is "three hundred nine million, four hundred twenty-one thousand, eight hundred one".