401046109 has 2 divisors, whose sum is σ = 401046110. Its totient is φ = 401046108.

The previous prime is 401046077. The next prime is 401046143. The reversal of 401046109 is 901640104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 288898009 + 112148100 = 16997^2 + 10590^2 .

It is a cyclic number.

It is not a de Polignac number, because 401046109 - 2⁵ = 401046077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401046169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200523054 + 200523055.

It is an arithmetic number, because the mean of its divisors is an integer number (200523055).

Almost surely, 2^401046109 is an apocalyptic number.

It is an amenable number.

401046109 is a deficient number, since it is larger than the sum of its proper divisors (1).

401046109 is an equidigital number, since it uses as much as digits as its factorization.

401046109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 401046109 is about 20026.1356481973. The cubic root of 401046109 is about 737.4480570139.

The spelling of 401046109 in words is "four hundred one million, forty-six thousand, one hundred nine".