400461261 has 16 divisors (see below), whose sum is σ = 561729600. Its totient is φ = 253395968.

The previous prime is 400461251. The next prime is 400461289. The reversal of 400461261 is 162164004.

It is not a de Polignac number, because 400461261 - 2⁷ = 400461133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400461241) 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 15 ways as a sum of consecutive naturals, for example, 33876 + ... + 44141.

It is an arithmetic number, because the mean of its divisors is an integer number (35108100).

Almost surely, 2^400461261 is an apocalyptic number.

It is an amenable number.

400461261 is a deficient number, since it is larger than the sum of its proper divisors (161268339).

400461261 is a wasteful number, since it uses less digits than its factorization.

400461261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78108.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 400461261 is about 20011.5282025137. The cubic root of 400461261 is about 737.0894076093.

The spelling of 400461261 in words is "four hundred million, four hundred sixty-one thousand, two hundred sixty-one".