400961029889 has 12 divisors (see below), whose sum is σ = 466508216304. Its totient is φ = 343618869384.

The previous prime is 400961029883. The next prime is 400961029933. The reversal of 400961029889 is 988920169004.

It is not a de Polignac number, because 400961029889 - 2⁸ = 400961029633 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (400961029883) 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 11 ways as a sum of consecutive naturals, for example, 462887 + ... + 1008060.

It is an arithmetic number, because the mean of its divisors is an integer number (38875684692).

Almost surely, 2^400961029889 is an apocalyptic number.

400961029889 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

400961029889 is a deficient number, since it is larger than the sum of its proper divisors (65547186415).

400961029889 is a wasteful number, since it uses less digits than its factorization.

400961029889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1476524 (or 1476517 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 56.

The spelling of 400961029889 in words is "four hundred billion, nine hundred sixty-one million, twenty-nine thousand, eight hundred eighty-nine".