945985994 has 4 divisors (see below), whose sum is σ = 1418978994. Its totient is φ = 472992996.

The previous prime is 945985981. The next prime is 945986009. The reversal of 945985994 is 499589549.

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., 775344025 + 170641969 = 27845^2 + 13063^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 236496497 + ... + 236496500.

Almost surely, 2^945985994 is an apocalyptic number.

945985994 is a deficient number, since it is larger than the sum of its proper divisors (472993000).

945985994 is a wasteful number, since it uses less digits than its factorization.

945985994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472992999.

The product of its digits is 20995200, while the sum is 62.

The square root of 945985994 is about 30756.8853104472. The cubic root of 945985994 is about 981.6610709068.

The spelling of 945985994 in words is "nine hundred forty-five million, nine hundred eighty-five thousand, nine hundred ninety-four".