946644987 has 4 divisors (see below), whose sum is σ = 1262193320. Its totient is φ = 631096656.

The previous prime is 946644977. The next prime is 946644991. The reversal of 946644987 is 789446649.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 789446649 = 3 ⋅263148883.

It is not a de Polignac number, because 946644987 - 2¹⁴ = 946628603 is a prime.

It is a super-3 number, since 3×946644987³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (946644967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157774162 + ... + 157774167.

It is an arithmetic number, because the mean of its divisors is an integer number (315548330).

Almost surely, 2^946644987 is an apocalyptic number.

946644987 is a deficient number, since it is larger than the sum of its proper divisors (315548333).

946644987 is a wasteful number, since it uses less digits than its factorization.

946644987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315548332.

The product of its digits is 10450944, while the sum is 57.

The square root of 946644987 is about 30767.5963799579. The cubic root of 946644987 is about 981.8889663231. Note that the first 3 decimals are identical.

The spelling of 946644987 in words is "nine hundred forty-six million, six hundred forty-four thousand, nine hundred eighty-seven".