420951889 has 8 divisors (see below), whose sum is σ = 422864000. Its totient is φ = 419044752.

The previous prime is 420951871. The next prime is 420951929. The reversal of 420951889 is 988159024.

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 420951889 - 2⁵ = 420951857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420951689) 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, 393247 + ... + 394315.

It is an arithmetic number, because the mean of its divisors is an integer number (52858000).

Almost surely, 2^420951889 is an apocalyptic number.

It is an amenable number.

420951889 is a deficient number, since it is larger than the sum of its proper divisors (1912111).

420951889 is a wasteful number, since it uses less digits than its factorization.

420951889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2487.

The product of its (nonzero) digits is 207360, while the sum is 46.

The square root of 420951889 is about 20517.1121018529. The cubic root of 420951889 is about 749.4525717863.

The spelling of 420951889 in words is "four hundred twenty million, nine hundred fifty-one thousand, eight hundred eighty-nine".