400617070740 has 72 divisors (see below), whose sum is σ = 1215355563240. Its totient is φ = 106817992704.

The previous prime is 400617070723. The next prime is 400617070741. The reversal of 400617070740 is 47070716004.

It can be written as a sum of positive squares in 4 ways, for example, as 72961572996 + 327655497744 = 270114^2 + 572412^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 400617070695 and 400617070704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400617070741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1365612 + ... + 1632828.

Almost surely, 2^400617070740 is an apocalyptic number.

It is an amenable number.

400617070740 is an abundant number, since it is smaller than the sum of its proper divisors (814738492500).

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

400617070740 is a wasteful number, since it uses less digits than its factorization.

400617070740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275561 (or 275556 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 36.

Adding to 400617070740 its reverse (47070716004), we get a palindrome (447687786744).

The spelling of 400617070740 in words is "four hundred billion, six hundred seventeen million, seventy thousand, seven hundred forty".