400737782441 has 4 divisors (see below), whose sum is σ = 404284134612. Its totient is φ = 397191430272.

The previous prime is 400737782429. The next prime is 400737782483. The reversal of 400737782441 is 144287737004.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8817961216 + 391919821225 = 93904^2 + 626035^2 .

It is a cyclic number.

It is not a de Polignac number, because 400737782441 - 2³⁴ = 383557913257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400737782041) 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, 1773175916 + ... + 1773176141.

It is an arithmetic number, because the mean of its divisors is an integer number (101071033653).

Almost surely, 2^400737782441 is an apocalyptic number.

It is an amenable number.

400737782441 is a deficient number, since it is larger than the sum of its proper divisors (3546352171).

400737782441 is a wasteful number, since it uses less digits than its factorization.

400737782441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3546352170.

The product of its (nonzero) digits is 1053696, while the sum is 47.

The spelling of 400737782441 in words is "four hundred billion, seven hundred thirty-seven million, seven hundred eighty-two thousand, four hundred forty-one".