40154008 has 8 divisors (see below), whose sum is σ = 75288780. Its totient is φ = 20077000.

The previous prime is 40154003. The next prime is 40154029. The reversal of 40154008 is 80045104.

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

It is a super-2 number, since 2×40154008² = 3224688716928128, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40154008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40154003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2509618 + ... + 2509633.

Almost surely, 2^40154008 is an apocalyptic number.

It is an amenable number.

40154008 is a deficient number, since it is larger than the sum of its proper divisors (35134772).

40154008 is a wasteful number, since it uses less digits than its factorization.

40154008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5019257 (or 5019253 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 40154008 is about 6336.7190248582. The cubic root of 40154008 is about 342.4335438576.

The spelling of 40154008 in words is "forty million, one hundred fifty-four thousand, eight".