650388442 has 16 divisors (see below), whose sum is σ = 1093037472. Its totient is φ = 287640720.

The previous prime is 650388437. The next prime is 650388443. The reversal of 650388442 is 244883056.

It is a junction number, because it is equal to n+sod(n) for n = 650388395 and 650388404.

It is not an unprimeable number, because it can be changed into a prime (650388443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 398688 + ... + 400315.

It is an arithmetic number, because the mean of its divisors is an integer number (68314842).

Almost surely, 2^650388442 is an apocalyptic number.

650388442 is a deficient number, since it is larger than the sum of its proper divisors (442649030).

650388442 is a wasteful number, since it uses less digits than its factorization.

650388442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799053.

The product of its (nonzero) digits is 184320, while the sum is 40.

The square root of 650388442 is about 25502.7144045492. The cubic root of 650388442 is about 866.4116266973.

The spelling of 650388442 in words is "six hundred fifty million, three hundred eighty-eight thousand, four hundred forty-two".