406839494 has 16 divisors (see below), whose sum is σ = 632849568. Its totient is φ = 195996672.

The previous prime is 406839491. The next prime is 406839539. The reversal of 406839494 is 494938604.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406839491) 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, 19067 + ... + 34310.

It is an arithmetic number, because the mean of its divisors is an integer number (39553098).

Almost surely, 2^406839494 is an apocalyptic number.

406839494 is a deficient number, since it is larger than the sum of its proper divisors (226010074).

406839494 is a wasteful number, since it uses less digits than its factorization.

406839494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53519.

The product of its (nonzero) digits is 746496, while the sum is 47.

The square root of 406839494 is about 20170.2626160395. The cubic root of 406839494 is about 740.9820744636.

The spelling of 406839494 in words is "four hundred six million, eight hundred thirty-nine thousand, four hundred ninety-four".