40540149 has 16 divisors (see below), whose sum is σ = 64680000. Its totient is φ = 24947568.

The previous prime is 40540147. The next prime is 40540163. The reversal of 40540149 is 94104504.

It is not a de Polignac number, because 40540149 - 2¹ = 40540147 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40540141) 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, 57399 + ... + 58100.

It is an arithmetic number, because the mean of its divisors is an integer number (4042500).

Almost surely, 2^40540149 is an apocalyptic number.

It is an amenable number.

40540149 is a deficient number, since it is larger than the sum of its proper divisors (24139851).

40540149 is a wasteful number, since it uses less digits than its factorization.

40540149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115521 (or 115515 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 40540149 is about 6367.1146526508. The cubic root of 40540149 is about 343.5277146266.

It can be divided in two parts, 405401 and 49, that added together give a triangular number (405450 = T₉₀₀).

The spelling of 40540149 in words is "forty million, five hundred forty thousand, one hundred forty-nine".