401443397 has 4 divisors (see below), whose sum is σ = 414393216. Its totient is φ = 388493580.

The previous prime is 401443373. The next prime is 401443417. The reversal of 401443397 is 793344104.

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 a cyclic number.

It is not a de Polignac number, because 401443397 - 2¹² = 401439301 is a prime.

It is a super-2 number, since 2×401443397² = 322313601989799218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401443337) 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, 6474863 + ... + 6474924.

It is an arithmetic number, because the mean of its divisors is an integer number (103598304).

Almost surely, 2^401443397 is an apocalyptic number.

It is an amenable number.

401443397 is a deficient number, since it is larger than the sum of its proper divisors (12949819).

401443397 is a wasteful number, since it uses less digits than its factorization.

401443397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12949818.

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 401443397 is about 20036.0524305563. The cubic root of 401443397 is about 737.6914891827.

The spelling of 401443397 in words is "four hundred one million, four hundred forty-three thousand, three hundred ninety-seven".