400406771 has 8 divisors (see below), whose sum is σ = 410529600. Its totient is φ = 390350848.

The previous prime is 400406767. The next prime is 400406789. The reversal of 400406771 is 177604004.

It is a happy number.

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 400406771 - 2² = 400406767 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400409771) 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, 4496 + ... + 28653.

It is an arithmetic number, because the mean of its divisors is an integer number (51316200).

Almost surely, 2^400406771 is an apocalyptic number.

400406771 is a deficient number, since it is larger than the sum of its proper divisors (10122829).

400406771 is a wasteful number, since it uses less digits than its factorization.

400406771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33453.

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 400406771 is about 20010.1666909599. The cubic root of 400406771 is about 737.0559746429.

The spelling of 400406771 in words is "four hundred million, four hundred six thousand, seven hundred seventy-one".