400706707400 has 48 divisors (see below), whose sum is σ = 936372339540. Its totient is φ = 159469049600.

The previous prime is 400706707309. The next prime is 400706707403. The reversal of 400706707400 is 4707607004.

It can be written as a sum of positive squares in 6 ways, for example, as 338209707364 + 62497000036 = 581558^2 + 249994^2 .

It is not an unprimeable number, because it can be changed into a prime (400706707403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5045711 + ... + 5124510.

Almost surely, 2^400706707400 is an apocalyptic number.

400706707400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400706707400 is an abundant number, since it is smaller than the sum of its proper divisors (535665632140).

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

400706707400 is a wasteful number, since it uses less digits than its factorization.

400706707400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10170434 (or 10170425 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 35.

The spelling of 400706707400 in words is "four hundred billion, seven hundred six million, seven hundred seven thousand, four hundred".