400341961 has 4 divisors (see below), whose sum is σ = 411162052. Its totient is φ = 389521872.

The previous prime is 400341943. The next prime is 400341983. The reversal of 400341961 is 169143004.

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

It can be written as a sum of positive squares in 2 ways, for example, as 214183225 + 186158736 = 14635^2 + 13644^2 .

It is a cyclic number.

It is not a de Polignac number, because 400341961 - 2¹¹ = 400339913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400341941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5409990 + ... + 5410063.

It is an arithmetic number, because the mean of its divisors is an integer number (102790513).

Almost surely, 2^400341961 is an apocalyptic number.

It is an amenable number.

400341961 is a deficient number, since it is larger than the sum of its proper divisors (10820091).

400341961 is a wasteful number, since it uses less digits than its factorization.

400341961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10820090.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 400341961 is about 20008.5471986349. The cubic root of 400341961 is about 737.0162057723.

Adding to 400341961 its reverse (169143004), we get a palindrome (569484965).

The spelling of 400341961 in words is "four hundred million, three hundred forty-one thousand, nine hundred sixty-one".