143809494 has 32 divisors (see below), whose sum is σ = 305928576. Its totient is φ = 44910720.

The previous prime is 143809487. The next prime is 143809507. The reversal of 143809494 is 494908341.

143809494 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20049 + ... + 26259.

It is an arithmetic number, because the mean of its divisors is an integer number (9560268).

Almost surely, 2^143809494 is an apocalyptic number.

143809494 is an abundant number, since it is smaller than the sum of its proper divisors (162119082).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

143809494 is a wasteful number, since it uses less digits than its factorization.

143809494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6460.

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 143809494 is about 11992.0596229338. The cubic root of 143809494 is about 523.9170347252.

The spelling of 143809494 in words is "one hundred forty-three million, eight hundred nine thousand, four hundred ninety-four".