40143403898 has 16 divisors (see below), whose sum is σ = 65575659240. Its totient is φ = 18319547136.

The previous prime is 40143403891. The next prime is 40143403973. The reversal of 40143403898 is 89830434104.

It can be written as a sum of positive squares in 4 ways, for example, as 23937350089 + 16206053809 = 154717^2 + 127303^2 .

It is a super-2 number, since 2×40143403898² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40143403891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8671715 + ... + 8676342.

Almost surely, 2^40143403898 is an apocalyptic number.

40143403898 is a deficient number, since it is larger than the sum of its proper divisors (25432255342).

40143403898 is a wasteful number, since it uses less digits than its factorization.

40143403898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17348161.

The product of its (nonzero) digits is 331776, while the sum is 44.

The spelling of 40143403898 in words is "forty billion, one hundred forty-three million, four hundred three thousand, eight hundred ninety-eight".