406992498709 has 4 divisors (see below), whose sum is σ = 407494339840. Its totient is φ = 406490657580.

The previous prime is 406992498707. The next prime is 406992498719. The reversal of 406992498709 is 907894299604.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 406992498709 - 2¹ = 406992498707 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406992498707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250919349 + ... + 250920970.

It is an arithmetic number, because the mean of its divisors is an integer number (101873584960).

Almost surely, 2^406992498709 is an apocalyptic number.

It is an amenable number.

406992498709 is a deficient number, since it is larger than the sum of its proper divisors (501841131).

406992498709 is an equidigital number, since it uses as much as digits as its factorization.

406992498709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501841130.

The product of its (nonzero) digits is 70543872, while the sum is 67.

The spelling of 406992498709 in words is "four hundred six billion, nine hundred ninety-two million, four hundred ninety-eight thousand, seven hundred nine".