920478943 has 4 divisors (see below), whose sum is σ = 920935080. Its totient is φ = 920022808.

The previous prime is 920478907. The next prime is 920478947. The reversal of 920478943 is 349874029.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-920478943 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 920478893 and 920478902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (920478947) 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, 225028 + ... + 229081.

It is an arithmetic number, because the mean of its divisors is an integer number (230233770).

Almost surely, 2^920478943 is an apocalyptic number.

920478943 is a deficient number, since it is larger than the sum of its proper divisors (456137).

920478943 is a wasteful number, since it uses less digits than its factorization.

920478943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456136.

The product of its (nonzero) digits is 435456, while the sum is 46.

The square root of 920478943 is about 30339.3958904920. The cubic root of 920478943 is about 972.7575703496.

The spelling of 920478943 in words is "nine hundred twenty million, four hundred seventy-eight thousand, nine hundred forty-three".