40002400036 has 9 divisors (see below), whose sum is σ = 70004900091. Its totient is φ = 20001000012.

The previous prime is 40002400021. The next prime is 40002400037. The reversal of 40002400036 is 63000420004.

The square root of 40002400036 is 200006.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40002399986 and 40002400022.

It is not an unprimeable number, because it can be changed into a prime (40002400037) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 350011 + ... + 450013.

Almost surely, 2^40002400036 is an apocalyptic number.

40002400036 is the 200006-th square number.

It is an amenable number.

40002400036 is a deficient number, since it is larger than the sum of its proper divisors (30002500055).

40002400036 is an frugal number, since it uses more digits than its factorization.

40002400036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200010 (or 100005 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

Multiplying 40002400036 by its product of nonzero digits (576), we get a square (23041382420736 = 4800144²).

The spelling of 40002400036 in words is "forty billion, two million, four hundred thousand, thirty-six".