946447393 has 4 divisors (see below), whose sum is σ = 979083540. Its totient is φ = 913811248.

The previous prime is 946447387. The next prime is 946447441. The reversal of 946447393 is 393744649.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 393744649 = 19843².

It can be written as a sum of positive squares in 2 ways, for example, as 658025104 + 288422289 = 25652^2 + 16983^2 .

It is a cyclic number.

It is not a de Polignac number, because 946447393 - 2⁹ = 946446881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (946447343) 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, 16318030 + ... + 16318087.

It is an arithmetic number, because the mean of its divisors is an integer number (244770885).

Almost surely, 2^946447393 is an apocalyptic number.

It is an amenable number.

946447393 is a deficient number, since it is larger than the sum of its proper divisors (32636147).

946447393 is a wasteful number, since it uses less digits than its factorization.

946447393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32636146.

The product of its digits is 1959552, while the sum is 49.

The square root of 946447393 is about 30764.3851393133. The cubic root of 946447393 is about 981.8206447342.

The spelling of 946447393 in words is "nine hundred forty-six million, four hundred forty-seven thousand, three hundred ninety-three".