609949143 has 16 divisors (see below), whose sum is σ = 916358400. Its totient is φ = 400904280.

The previous prime is 609949117. The next prime is 609949147. The reversal of 609949143 is 341949906.

It is not a de Polignac number, because 609949143 - 2⁶ = 609949079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (609949147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157173 + ... + 161006.

It is an arithmetic number, because the mean of its divisors is an integer number (57272400).

Almost surely, 2^609949143 is an apocalyptic number.

609949143 is a deficient number, since it is larger than the sum of its proper divisors (306409257).

609949143 is a wasteful number, since it uses less digits than its factorization.

609949143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318259 (or 318253 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The square root of 609949143 is about 24697.1484791261. The cubic root of 609949143 is about 848.0690390977.

The spelling of 609949143 in words is "six hundred nine million, nine hundred forty-nine thousand, one hundred forty-three".