400773912 has 128 divisors (see below), whose sum is σ = 1322749440. Its totient is φ = 97966080.

The previous prime is 400773887. The next prime is 400773931. The reversal of 400773912 is 219377004.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25038 + ... + 37794.

It is an arithmetic number, because the mean of its divisors is an integer number (10333980).

Almost surely, 2^400773912 is an apocalyptic number.

400773912 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 400773912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (661374720).

400773912 is an abundant number, since it is smaller than the sum of its proper divisors (921975528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400773912 is a wasteful number, since it uses less digits than its factorization.

400773912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12801 (or 12797 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 400773912 is about 20019.3384506082. The cubic root of 400773912 is about 737.2811796278.

The spelling of 400773912 in words is "four hundred million, seven hundred seventy-three thousand, nine hundred twelve".