40198888 has 8 divisors (see below), whose sum is σ = 75372930. Its totient is φ = 20099440.

The previous prime is 40198849. The next prime is 40198919. The reversal of 40198888 is 88889104.

It can be written as a sum of positive squares in only one way, i.e., 39162564 + 1036324 = 6258^2 + 1018^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2512423 + ... + 2512438.

Almost surely, 2^40198888 is an apocalyptic number.

It is an amenable number.

40198888 is a deficient number, since it is larger than the sum of its proper divisors (35174042).

40198888 is a wasteful number, since it uses less digits than its factorization.

40198888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5024867 (or 5024863 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 46.

The square root of 40198888 is about 6340.2593006911. The cubic root of 40198888 is about 342.5610752965.

The spelling of 40198888 in words is "forty million, one hundred ninety-eight thousand, eight hundred eighty-eight".