40061901 has 16 divisors (see below), whose sum is σ = 58501440. Its totient is φ = 24184320.

The previous prime is 40061893. The next prime is 40061909. The reversal of 40061901 is 10916004.

It is an interprime number because it is at equal distance from previous prime (40061893) and next prime (40061909).

It is not a de Polignac number, because 40061901 - 2³ = 40061893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40061909) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6621 + ... + 11133.

It is an arithmetic number, because the mean of its divisors is an integer number (3656340).

Almost surely, 2^40061901 is an apocalyptic number.

It is an amenable number.

40061901 is a deficient number, since it is larger than the sum of its proper divisors (18439539).

40061901 is a wasteful number, since it uses less digits than its factorization.

40061901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4796.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 40061901 is about 6329.4471322541. The cubic root of 40061901 is about 342.1715137796.

Adding to 40061901 its reverse (10916004), we get a palindrome (50977905).

The spelling of 40061901 in words is "forty million, sixty-one thousand, nine hundred one".