420952393 has 4 divisors (see below), whose sum is σ = 421184128. Its totient is φ = 420720660.

The previous prime is 420952381. The next prime is 420952403. The reversal of 420952393 is 393259024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 420952393 - 2¹³ = 420944201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420952093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113121 + ... + 116782.

It is an arithmetic number, because the mean of its divisors is an integer number (105296032).

Almost surely, 2^420952393 is an apocalyptic number.

It is an amenable number.

420952393 is a deficient number, since it is larger than the sum of its proper divisors (231735).

420952393 is a wasteful number, since it uses less digits than its factorization.

420952393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231734.

The product of its (nonzero) digits is 58320, while the sum is 37.

The square root of 420952393 is about 20517.1243842796. The cubic root of 420952393 is about 749.4528708893.

The spelling of 420952393 in words is "four hundred twenty million, nine hundred fifty-two thousand, three hundred ninety-three".