400111099 has 4 divisors (see below), whose sum is σ = 423647064. Its totient is φ = 376575136.

The previous prime is 400111093. The next prime is 400111109. The reversal of 400111099 is 990111004.

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 400111099 - 2³ = 400111091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400111091) 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, 11767957 + ... + 11767990.

It is an arithmetic number, because the mean of its divisors is an integer number (105911766).

Almost surely, 2^400111099 is an apocalyptic number.

400111099 is a deficient number, since it is larger than the sum of its proper divisors (23535965).

400111099 is a wasteful number, since it uses less digits than its factorization.

400111099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23535964.

The product of its (nonzero) digits is 324, while the sum is 25.

The square root of 400111099 is about 20002.7772821676. Note that the first 3 decimals coincide. The cubic root of 400111099 is about 736.8745087827.

The spelling of 400111099 in words is "four hundred million, one hundred eleven thousand, ninety-nine".