946380521 has 4 divisors (see below), whose sum is σ = 957014100. Its totient is φ = 935746944.

The previous prime is 946380511. The next prime is 946380553. The reversal of 946380521 is 125083649.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 517062121 + 429318400 = 22739^2 + 20720^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-946380521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (946380511) 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, 5316656 + ... + 5316833.

It is an arithmetic number, because the mean of its divisors is an integer number (239253525).

Almost surely, 2^946380521 is an apocalyptic number.

It is an amenable number.

946380521 is a deficient number, since it is larger than the sum of its proper divisors (10633579).

946380521 is a wasteful number, since it uses less digits than its factorization.

946380521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10633578.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 946380521 is about 30763.2982789557. The cubic root of 946380521 is about 981.7975204144.

The spelling of 946380521 in words is "nine hundred forty-six million, three hundred eighty thousand, five hundred twenty-one".