400797373284 has 288 divisors, whose sum is σ = 1272221862912. Its totient is φ = 103356000000.

The previous prime is 400797373279. The next prime is 400797373303. The reversal of 400797373284 is 482373797004.

400797373284 is a `hidden beast` number, since 400 + 7 + 97 + 3 + 73 + 2 + 84 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 400797373284.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 276220759 + ... + 276222209.

It is an arithmetic number, because the mean of its divisors is an integer number (4417437024).

Almost surely, 2^400797373284 is an apocalyptic number.

400797373284 is a gapful number since it is divisible by the number (44) 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 400797373284, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (636110931456).

400797373284 is an abundant number, since it is smaller than the sum of its proper divisors (871424489628).

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

400797373284 is a wasteful number, since it uses less digits than its factorization.

400797373284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2127 (or 2122 counting only the distinct ones).

The product of its (nonzero) digits is 7112448, while the sum is 54.

The spelling of 400797373284 in words is "four hundred billion, seven hundred ninety-seven million, three hundred seventy-three thousand, two hundred eighty-four".