40987201 has 4 divisors (see below), whose sum is σ = 41014404. Its totient is φ = 40960000.

The previous prime is 40987171. The next prime is 40987223. The reversal of 40987201 is 10278904.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 40947201 + 40000 = 6399^2 + 200^2 .

It is a 3-Lehmer number, since φ(40987201) divides (40987201-1)³.

It is a cyclic number.

It is not a de Polignac number, because 40987201 - 2⁵ = 40987169 is a prime.

It is a deceptive number, since it divides R_40987200.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40987291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11200 + ... + 14401.

It is an arithmetic number, because the mean of its divisors is an integer number (10253601).

It is a Poulet number, since it divides 2^40987200-1.

Almost surely, 2^40987201 is an apocalyptic number.

It is an amenable number.

40987201 is a deficient number, since it is larger than the sum of its proper divisors (27203).

40987201 is a wasteful number, since it uses less digits than its factorization.

40987201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27202.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 40987201 is about 6402.1247254330. The cubic root of 40987201 is about 344.7858392207.

The spelling of 40987201 in words is "forty million, nine hundred eighty-seven thousand, two hundred one".