401659443 has 12 divisors (see below), whose sum is σ = 586157208. Its totient is φ = 265011840.

The previous prime is 401659429. The next prime is 401659451. The reversal of 401659443 is 344956104.

It is not a de Polignac number, because 401659443 - 2⁹ = 401658931 is a prime.

It is a super-2 number, since 2×401659443² = 322660616302140498, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401659398 and 401659407.

It is not an unprimeable number, because it can be changed into a prime (401659043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 229173 + ... + 230918.

It is an arithmetic number, because the mean of its divisors is an integer number (48846434).

Almost surely, 2^401659443 is an apocalyptic number.

401659443 is a deficient number, since it is larger than the sum of its proper divisors (184497765).

401659443 is a wasteful number, since it uses less digits than its factorization.

401659443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460194 (or 460191 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 401659443 is about 20041.4431366606. The cubic root of 401659443 is about 737.8238006656.

The spelling of 401659443 in words is "four hundred one million, six hundred fifty-nine thousand, four hundred forty-three".