400459961 has 8 divisors (see below), whose sum is σ = 437029824. Its totient is φ = 363917520.

The previous prime is 400459949. The next prime is 400459967. The reversal of 400459961 is 169954004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 400459961 - 2¹⁴ = 400443577 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (400459967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34631 + ... + 44723.

It is an arithmetic number, because the mean of its divisors is an integer number (54628728).

Almost surely, 2^400459961 is an apocalyptic number.

It is an amenable number.

400459961 is a deficient number, since it is larger than the sum of its proper divisors (36569863).

400459961 is a wasteful number, since it uses less digits than its factorization.

400459961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13711.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 400459961 is about 20011.4957212098. The cubic root of 400459961 is about 737.0886100146.

The spelling of 400459961 in words is "four hundred million, four hundred fifty-nine thousand, nine hundred sixty-one".