40488149 has 4 divisors (see below), whose sum is σ = 43602636. Its totient is φ = 37373664.

The previous prime is 40488121. The next prime is 40488163. The reversal of 40488149 is 94188404.

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 7941124 + 32547025 = 2818^2 + 5705^2 .

It is a cyclic number.

It is not a de Polignac number, because 40488149 - 2⁸ = 40487893 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40488109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1557224 + ... + 1557249.

It is an arithmetic number, because the mean of its divisors is an integer number (10900659).

Almost surely, 2^40488149 is an apocalyptic number.

It is an amenable number.

40488149 is a deficient number, since it is larger than the sum of its proper divisors (3114487).

40488149 is a wasteful number, since it uses less digits than its factorization.

40488149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3114486.

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 40488149 is about 6363.0298600588. The cubic root of 40488149 is about 343.3807731810.

The spelling of 40488149 in words is "forty million, four hundred eighty-eight thousand, one hundred forty-nine".