406876393384 has 8 divisors (see below), whose sum is σ = 762893237610. Its totient is φ = 203438196688.

The previous prime is 406876393367. The next prime is 406876393409. The reversal of 406876393384 is 483393678604.

It can be written as a sum of positive squares in only one way, i.e., 246788381284 + 160088012100 = 496778^2 + 400110^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25429774579 + ... + 25429774594.

Almost surely, 2^406876393384 is an apocalyptic number.

It is an amenable number.

406876393384 is a deficient number, since it is larger than the sum of its proper divisors (356016844226).

406876393384 is a wasteful number, since it uses less digits than its factorization.

406876393384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50859549179 (or 50859549175 counting only the distinct ones).

The product of its (nonzero) digits is 62705664, while the sum is 61.

The spelling of 406876393384 in words is "four hundred six billion, eight hundred seventy-six million, three hundred ninety-three thousand, three hundred eighty-four".