400913961 has 8 divisors (see below), whose sum is σ = 610916544. Its totient is φ = 229093680.

The previous prime is 400913911. The next prime is 400913963. The reversal of 400913961 is 169319004.

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

It is not a de Polignac number, because 400913961 - 2¹⁴ = 400897577 is a prime.

It is not an unprimeable number, because it can be changed into a prime (400913963) 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, 9545550 + ... + 9545591.

It is an arithmetic number, because the mean of its divisors is an integer number (76364568).

Almost surely, 2^400913961 is an apocalyptic number.

It is an amenable number.

400913961 is a deficient number, since it is larger than the sum of its proper divisors (210002583).

400913961 is a wasteful number, since it uses less digits than its factorization.

400913961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19091151.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 400913961 is about 20022.8359879414. The cubic root of 400913961 is about 737.3670497104.

The spelling of 400913961 in words is "four hundred million, nine hundred thirteen thousand, nine hundred sixty-one".