400014641 has 16 divisors (see below), whose sum is σ = 460667088. Its totient is φ = 344064000.

The previous prime is 400014613. The next prime is 400014647. The reversal of 400014641 is 146410004.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 3168400 + 396846241 = 1780^2 + 19921^2 .

It is a cyclic number.

It is not a de Polignac number, because 400014641 - 2⁶ = 400014577 is a prime.

It is not an unprimeable number, because it can be changed into a prime (400014647) 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, 13361 + ... + 31281.

It is an arithmetic number, because the mean of its divisors is an integer number (28791693).

Almost surely, 2^400014641 is an apocalyptic number.

It is an amenable number.

400014641 is a deficient number, since it is larger than the sum of its proper divisors (60652447).

400014641 is a wasteful number, since it uses less digits than its factorization.

400014641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18052.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 400014641 is about 20000.3660216507. The cubic root of 400014641 is about 736.8152892693.

Adding to 400014641 its reverse (146410004), we get a palindrome (546424645).

The spelling of 400014641 in words is "four hundred million, fourteen thousand, six hundred forty-one".