40493151 has 6 divisors (see below), whose sum is σ = 58490120. Its totient is φ = 26995428.

The previous prime is 40493149. The next prime is 40493191. The reversal of 40493151 is 15139404.

It is not a de Polignac number, because 40493151 - 2¹ = 40493149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40493191) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2249611 + ... + 2249628.

Almost surely, 2^40493151 is an apocalyptic number.

40493151 is a deficient number, since it is larger than the sum of its proper divisors (17996969).

40493151 is a wasteful number, since it uses less digits than its factorization.

40493151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4499245 (or 4499242 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 40493151 is about 6363.4228996665. The cubic root of 40493151 is about 343.3949132849.

The spelling of 40493151 in words is "forty million, four hundred ninety-three thousand, one hundred fifty-one".