406868757439 has 4 divisors (see below), whose sum is σ = 410897161080. Its totient is φ = 402840353800.

The previous prime is 406868757367. The next prime is 406868757443. The reversal of 406868757439 is 934757868604.

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 406868757439 - 2⁷ = 406868757311 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 (406868755439) 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, 2014201669 + ... + 2014201870.

It is an arithmetic number, because the mean of its divisors is an integer number (102724290270).

Almost surely, 2^406868757439 is an apocalyptic number.

406868757439 is a deficient number, since it is larger than the sum of its proper divisors (4028403641).

406868757439 is a wasteful number, since it uses less digits than its factorization.

406868757439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4028403640.

The product of its (nonzero) digits is 243855360, while the sum is 67.

The spelling of 406868757439 in words is "four hundred six billion, eight hundred sixty-eight million, seven hundred fifty-seven thousand, four hundred thirty-nine".