946331987 has 4 divisors (see below), whose sum is σ = 987476880. Its totient is φ = 905187096.

The previous prime is 946331983. The next prime is 946331989. The reversal of 946331987 is 789133649.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 789133649 = 557 ⋅1416757.

It is a cyclic number.

It is not a de Polignac number, because 946331987 - 2² = 946331983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (946331983) 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, 20572412 + ... + 20572457.

It is an arithmetic number, because the mean of its divisors is an integer number (246869220).

Almost surely, 2^946331987 is an apocalyptic number.

946331987 is a deficient number, since it is larger than the sum of its proper divisors (41144893).

946331987 is a wasteful number, since it uses less digits than its factorization.

946331987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41144892.

The product of its digits is 979776, while the sum is 50.

The square root of 946331987 is about 30762.5094392509. The cubic root of 946331987 is about 981.7807366879.

The spelling of 946331987 in words is "nine hundred forty-six million, three hundred thirty-one thousand, nine hundred eighty-seven".