203440494 has 16 divisors (see below), whose sum is σ = 408431232. Its totient is φ = 67555128.

The previous prime is 203440477. The next prime is 203440499. The reversal of 203440494 is 494044302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203440499) 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, 62884 + ... + 66039.

It is an arithmetic number, because the mean of its divisors is an integer number (25526952).

Almost surely, 2^203440494 is an apocalyptic number.

203440494 is an abundant number, since it is smaller than the sum of its proper divisors (204990738).

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

203440494 is a wasteful number, since it uses less digits than its factorization.

203440494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129191.

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 203440494 is about 14263.2567809740. The cubic root of 203440494 is about 588.1378558258.

Adding to 203440494 its reverse (494044302), we get a palindrome (697484796).

The spelling of 203440494 in words is "two hundred three million, four hundred forty thousand, four hundred ninety-four".