400674336740 has 48 divisors (see below), whose sum is σ = 845847878400. Its totient is φ = 159427037952.

The previous prime is 400674336719. The next prime is 400674336743. The reversal of 400674336740 is 47633476004.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 400674336691 and 400674336700.

It is not an unprimeable number, because it can be changed into a prime (400674336743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4434131 + ... + 4523589.

It is an arithmetic number, because the mean of its divisors is an integer number (17621830800).

Almost surely, 2^400674336740 is an apocalyptic number.

It is an amenable number.

400674336740 is an abundant number, since it is smaller than the sum of its proper divisors (445173541660).

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

400674336740 is a wasteful number, since it uses less digits than its factorization.

400674336740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90644 (or 90642 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 44.

The spelling of 400674336740 in words is "four hundred billion, six hundred seventy-four million, three hundred thirty-six thousand, seven hundred forty".