400950881 has 8 divisors (see below), whose sum is σ = 422448000. Its totient is φ = 379792512.

The previous prime is 400950859. The next prime is 400950887. The reversal of 400950881 is 188059004.

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 400950881 - 2¹⁴ = 400934497 is a prime.

It is a super-2 number, since 2×400950881² = 321523217949352322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400950887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82256 + ... + 86993.

It is an arithmetic number, because the mean of its divisors is an integer number (52806000).

Almost surely, 2^400950881 is an apocalyptic number.

It is an amenable number.

400950881 is a deficient number, since it is larger than the sum of its proper divisors (21497119).

400950881 is a wasteful number, since it uses less digits than its factorization.

400950881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169375.

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 400950881 is about 20023.7579140380. The cubic root of 400950881 is about 737.3896836240.

The spelling of 400950881 in words is "four hundred million, nine hundred fifty thousand, eight hundred eighty-one".