943949987 has 2 divisors, whose sum is σ = 943949988. Its totient is φ = 943949986.

The previous prime is 943949983. The next prime is 943950013. The reversal of 943949987 is 789949349.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 943949987 - 2² = 943949983 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (943949983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 471974993 + 471974994.

It is an arithmetic number, because the mean of its divisors is an integer number (471974994).

Almost surely, 2^943949987 is an apocalyptic number.

943949987 is a deficient number, since it is larger than the sum of its proper divisors (1).

943949987 is an equidigital number, since it uses as much as digits as its factorization.

943949987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17635968, while the sum is 62.

The square root of 943949987 is about 30723.7690884436. The cubic root of 943949987 is about 980.9563020462.

The spelling of 943949987 in words is "nine hundred forty-three million, nine hundred forty-nine thousand, nine hundred eighty-seven".