402205040639 has 8 divisors (see below), whose sum is σ = 405009917088. Its totient is φ = 399404884320.

The previous prime is 402205040579. The next prime is 402205040647. The reversal of 402205040639 is 936040502204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 402205040639 - 2¹⁶ = 402204975103 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 402205040599 and 402205040608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402205040539) 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, 1008932 + ... + 1349945.

It is an arithmetic number, because the mean of its divisors is an integer number (50626239636).

Almost surely, 2^402205040639 is an apocalyptic number.

402205040639 is a deficient number, since it is larger than the sum of its proper divisors (2804876449).

402205040639 is a wasteful number, since it uses less digits than its factorization.

402205040639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2360065.

The product of its (nonzero) digits is 51840, while the sum is 35.

The spelling of 402205040639 in words is "four hundred two billion, two hundred five million, forty thousand, six hundred thirty-nine".