420673393 has 8 divisors (see below), whose sum is σ = 482198912. Its totient is φ = 359505216.

The previous prime is 420673327. The next prime is 420673397. The reversal of 420673393 is 393376024.

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

It is not a de Polignac number, because 420673393 - 2⁹ = 420672881 is a prime.

It is a super-3 number, since 3×420673393³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420673397) 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, 86805 + ... + 91522.

It is an arithmetic number, because the mean of its divisors is an integer number (60274864).

Almost surely, 2^420673393 is an apocalyptic number.

It is an amenable number.

420673393 is a deficient number, since it is larger than the sum of its proper divisors (61525519).

420673393 is a wasteful number, since it uses less digits than its factorization.

420673393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178671.

The product of its (nonzero) digits is 81648, while the sum is 37.

The square root of 420673393 is about 20510.3240588734. The cubic root of 420673393 is about 749.2872594751.

The spelling of 420673393 in words is "four hundred twenty million, six hundred seventy-three thousand, three hundred ninety-three".