206440494 has 32 divisors (see below), whose sum is σ = 455493024. Its totient is φ = 61969920.

The previous prime is 206440489. The next prime is 206440499. The reversal of 206440494 is 494044602.

It is an interprime number because it is at equal distance from previous prime (206440489) and next prime (206440499).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206440499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29079 + ... + 35474.

It is an arithmetic number, because the mean of its divisors is an integer number (14234157).

Almost surely, 2^206440494 is an apocalyptic number.

206440494 is an abundant number, since it is smaller than the sum of its proper divisors (249052530).

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

206440494 is a wasteful number, since it uses less digits than its factorization.

206440494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64612.

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 206440494 is about 14368.0372354751. The cubic root of 206440494 is about 591.0147184415.

The spelling of 206440494 in words is "two hundred six million, four hundred forty thousand, four hundred ninety-four".