40842487 has 16 divisors (see below), whose sum is σ = 48435712. Its totient is φ = 33708960.

The previous prime is 40842479. The next prime is 40842491. The reversal of 40842487 is 78424804.

It is a cyclic number.

It is not a de Polignac number, because 40842487 - 2³ = 40842479 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40842427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25912 + ... + 27442.

It is an arithmetic number, because the mean of its divisors is an integer number (3027232).

Almost surely, 2^40842487 is an apocalyptic number.

40842487 is a deficient number, since it is larger than the sum of its proper divisors (7593225).

40842487 is a wasteful number, since it uses less digits than its factorization.

40842487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1678.

The product of its (nonzero) digits is 57344, while the sum is 37.

The square root of 40842487 is about 6390.8127026224. The cubic root of 40842487 is about 344.3795808913.

The spelling of 40842487 in words is "forty million, eight hundred forty-two thousand, four hundred eighty-seven".