406161911 has 4 divisors (see below), whose sum is σ = 411055512. Its totient is φ = 401268312.

The previous prime is 406161893. The next prime is 406161941. The reversal of 406161911 is 119161604.

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 406161911 - 2¹⁴ = 406145527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406161941) 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, 2446676 + ... + 2446841.

It is an arithmetic number, because the mean of its divisors is an integer number (102763878).

Almost surely, 2^406161911 is an apocalyptic number.

406161911 is a deficient number, since it is larger than the sum of its proper divisors (4893601).

406161911 is an equidigital number, since it uses as much as digits as its factorization.

406161911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4893600.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 406161911 is about 20153.4590331288. The cubic root of 406161911 is about 740.5704822956.

The spelling of 406161911 in words is "four hundred six million, one hundred sixty-one thousand, nine hundred eleven".