400341566 has 4 divisors (see below), whose sum is σ = 600512352. Its totient is φ = 200170782.

The previous prime is 400341559. The next prime is 400341577. The reversal of 400341566 is 665143004.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100085390 + ... + 100085393.

It is an arithmetic number, because the mean of its divisors is an integer number (150128088).

Almost surely, 2^400341566 is an apocalyptic number.

400341566 is a deficient number, since it is larger than the sum of its proper divisors (200170786).

400341566 is a wasteful number, since it uses less digits than its factorization.

400341566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200170785.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 400341566 is about 20008.5373278508. The cubic root of 400341566 is about 737.0159633782.

The spelling of 400341566 in words is "four hundred million, three hundred forty-one thousand, five hundred sixty-six".