541399669 has 4 divisors (see below), whose sum is σ = 541461996. Its totient is φ = 541337344.

The previous prime is 541399667. The next prime is 541399673. The reversal of 541399669 is 966993145.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 966993145 = 5 ⋅193398629.

It can be written as a sum of positive squares in 2 ways, for example, as 176092900 + 365306769 = 13270^2 + 19113^2 .

It is a cyclic number.

It is not a de Polignac number, because 541399669 - 2¹ = 541399667 is a prime.

It is a super-2 number, since 2×541399669² = 586227203186619122, 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 (541399667) 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, 15514 + ... + 36379.

It is an arithmetic number, because the mean of its divisors is an integer number (135365499).

Almost surely, 2^541399669 is an apocalyptic number.

It is an amenable number.

541399669 is a deficient number, since it is larger than the sum of its proper divisors (62327).

541399669 is a wasteful number, since it uses less digits than its factorization.

541399669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62326.

The product of its digits is 1574640, while the sum is 52.

The square root of 541399669 is about 23267.9966692451. The cubic root of 541399669 is about 815.0282494881.

The spelling of 541399669 in words is "five hundred forty-one million, three hundred ninety-nine thousand, six hundred sixty-nine".