650209394 has 8 divisors (see below), whose sum is σ = 988674780. Its totient is φ = 320651136.

The previous prime is 650209369. The next prime is 650209397. The reversal of 650209394 is 493902056.

It can be written as a sum of positive squares in 2 ways, for example, as 649995025 + 214369 = 25495^2 + 463^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (650209397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2226599 + ... + 2226890.

Almost surely, 2^650209394 is an apocalyptic number.

650209394 is a deficient number, since it is larger than the sum of its proper divisors (338465386).

650209394 is a wasteful number, since it uses less digits than its factorization.

650209394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4453564.

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 650209394 is about 25499.2037914912. The cubic root of 650209394 is about 866.3321134421.

The spelling of 650209394 in words is "six hundred fifty million, two hundred nine thousand, three hundred ninety-four".