401017115 has 4 divisors (see below), whose sum is σ = 481220544. Its totient is φ = 320813688.

The previous prime is 401017081. The next prime is 401017117. The reversal of 401017115 is 511710104.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401017115 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401017117) 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, 40101707 + ... + 40101716.

It is an arithmetic number, because the mean of its divisors is an integer number (120305136).

Almost surely, 2^401017115 is an apocalyptic number.

401017115 is a deficient number, since it is larger than the sum of its proper divisors (80203429).

401017115 is an equidigital number, since it uses as much as digits as its factorization.

401017115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80203428.

The product of its (nonzero) digits is 140, while the sum is 20.

The square root of 401017115 is about 20025.4117310981. The cubic root of 401017115 is about 737.4302850888.

Adding to 401017115 its reverse (511710104), we get a palindrome (912727219).

The spelling of 401017115 in words is "four hundred one million, seventeen thousand, one hundred fifteen".