401619 has 4 divisors (see below), whose sum is σ = 535496. Its totient is φ = 267744.

The previous prime is 401593. The next prime is 401627. The reversal of 401619 is 916104.

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

It is not a de Polignac number, because 401619 - 2⁵ = 401587 is a prime.

It is a super-2 number, since 2×401619² = 322595642322, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 401595 and 401604.

It is not an unprimeable number, because it can be changed into a prime (401629) 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, 66934 + ... + 66939.

It is an arithmetic number, because the mean of its divisors is an integer number (133874).

2⁴⁰¹⁶¹⁹ is an apocalyptic number.

401619 is a deficient number, since it is larger than the sum of its proper divisors (133877).

401619 is a wasteful number, since it uses less digits than its factorization.

401619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133876.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 401619 is about 633.7341714000. The cubic root of 401619 is about 73.7799036063.

The spelling of 401619 in words is "four hundred one thousand, six hundred nineteen".