406993314887 has 4 divisors (see below), whose sum is σ = 407698676496. Its totient is φ = 406287953280.

The previous prime is 406993314883. The next prime is 406993314901. The reversal of 406993314887 is 788413399604.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 406993314887 - 2² = 406993314883 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 (406993314883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 352679939 + ... + 352681092.

It is an arithmetic number, because the mean of its divisors is an integer number (101924669124).

Almost surely, 2^406993314887 is an apocalyptic number.

406993314887 is a deficient number, since it is larger than the sum of its proper divisors (705361609).

406993314887 is an equidigital number, since it uses as much as digits as its factorization.

406993314887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705361608.

The product of its (nonzero) digits is 31352832, while the sum is 62.

The spelling of 406993314887 in words is "four hundred six billion, nine hundred ninety-three million, three hundred fourteen thousand, eight hundred eighty-seven".