400343770436 has 6 divisors (see below), whose sum is σ = 700601598270. Its totient is φ = 200171885216.

The previous prime is 400343770433. The next prime is 400343770471. The reversal of 400343770436 is 634077343004.

It can be written as a sum of positive squares in only one way, i.e., 344972974336 + 55370796100 = 587344^2 + 235310^2 .

It is a junction number, because it is equal to n+sod(n) for n = 400343770393 and 400343770402.

It is not an unprimeable number, because it can be changed into a prime (400343770433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50042971301 + ... + 50042971308.

It is an arithmetic number, because the mean of its divisors is an integer number (116766933045).

Almost surely, 2^400343770436 is an apocalyptic number.

It is an amenable number.

400343770436 is a deficient number, since it is larger than the sum of its proper divisors (300257827834).

400343770436 is a wasteful number, since it uses less digits than its factorization.

400343770436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100085942613 (or 100085942611 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 41.

The spelling of 400343770436 in words is "four hundred billion, three hundred forty-three million, seven hundred seventy thousand, four hundred thirty-six".