400886841 has 4 divisors (see below), whose sum is σ = 534515792. Its totient is φ = 267257892.

The previous prime is 400886839. The next prime is 400886851. The reversal of 400886841 is 148688004.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 400886841 - 2¹ = 400886839 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 400886841.

It is not an unprimeable number, because it can be changed into a prime (400886821) 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, 66814471 + ... + 66814476.

It is an arithmetic number, because the mean of its divisors is an integer number (133628948).

Almost surely, 2^400886841 is an apocalyptic number.

It is an amenable number.

400886841 is a deficient number, since it is larger than the sum of its proper divisors (133628951).

400886841 is a wasteful number, since it uses less digits than its factorization.

400886841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133628950.

The product of its (nonzero) digits is 49152, while the sum is 39.

The square root of 400886841 is about 20022.1587497452. The cubic root of 400886841 is about 737.3504228301.

The spelling of 400886841 in words is "four hundred million, eight hundred eighty-six thousand, eight hundred forty-one".