401019 has 4 divisors (see below), whose sum is σ = 534696. Its totient is φ = 267344.

The previous prime is 401017. The next prime is 401029. The reversal of 401019 is 910104.

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 401019 - 2¹ = 401017 is a prime.

It is a super-2 number, since 2×401019² = 321632476722, which contains 22 as substring.

It is a D-number.

401019 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 400989 and 401007.

It is not an unprimeable number, because it can be changed into a prime (401017) 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, 66834 + ... + 66839.

It is an arithmetic number, because the mean of its divisors is an integer number (133674).

2⁴⁰¹⁰¹⁹ is an apocalyptic number.

401019 is a deficient number, since it is larger than the sum of its proper divisors (133677).

401019 is a wasteful number, since it uses less digits than its factorization.

401019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133676.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 401019 is about 633.2606098598. The cubic root of 401019 is about 73.7431440529.

The spelling of 401019 in words is "four hundred one thousand, nineteen".