963991394 has 4 divisors (see below), whose sum is σ = 1445987094. Its totient is φ = 481995696.

The previous prime is 963991393. The next prime is 963991411. The reversal of 963991394 is 493199369.

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

It can be written as a sum of positive squares in only one way, i.e., 944763169 + 19228225 = 30737^2 + 4385^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (963991393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 240997847 + ... + 240997850.

Almost surely, 2^963991394 is an apocalyptic number.

963991394 is a deficient number, since it is larger than the sum of its proper divisors (481995700).

963991394 is a wasteful number, since it uses less digits than its factorization.

963991394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481995699.

The product of its digits is 1417176, while the sum is 53.

The square root of 963991394 is about 31048.2108019126. The cubic root of 963991394 is about 987.8501093454.

The spelling of 963991394 in words is "nine hundred sixty-three million, nine hundred ninety-one thousand, three hundred ninety-four".