401944427 has 4 divisors (see below), whose sum is σ = 403022400. Its totient is φ = 400866456.

The previous prime is 401944409. The next prime is 401944441. The reversal of 401944427 is 724449104.

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

It is a cyclic number.

It is not a de Polignac number, because 401944427 - 2¹⁶ = 401878891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401944027) 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, 538427 + ... + 539172.

It is an arithmetic number, because the mean of its divisors is an integer number (100755600).

Almost surely, 2^401944427 is an apocalyptic number.

401944427 is a deficient number, since it is larger than the sum of its proper divisors (1077973).

401944427 is a wasteful number, since it uses less digits than its factorization.

401944427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1077972.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 401944427 is about 20048.5517432058. The cubic root of 401944427 is about 737.9982587974.

The spelling of 401944427 in words is "four hundred one million, nine hundred forty-four thousand, four hundred twenty-seven".