400670703405 has 96 divisors (see below), whose sum is σ = 814518042624. Its totient is φ = 178386461568.

The previous prime is 400670703347. The next prime is 400670703409. The reversal of 400670703405 is 504307076004.

It is not a de Polignac number, because 400670703405 - 2⁹ = 400670702893 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 400670703405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400670703409) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4657492 + ... + 4742738.

It is an arithmetic number, because the mean of its divisors is an integer number (8484562944).

Almost surely, 2^400670703405 is an apocalyptic number.

400670703405 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

400670703405 is an abundant number, since it is smaller than the sum of its proper divisors (413847339219).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400670703405 is a wasteful number, since it uses less digits than its factorization.

400670703405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85655 (or 85652 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 36.

Adding to 400670703405 its reverse (504307076004), we get a palindrome (904977779409).

The spelling of 400670703405 in words is "four hundred billion, six hundred seventy million, seven hundred three thousand, four hundred five".