40492387 has 8 divisors (see below), whose sum is σ = 43656704. Its totient is φ = 37335168.

The previous prime is 40492373. The next prime is 40492411. The reversal of 40492387 is 78329404.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40492387 - 2¹⁹ = 39968099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40492327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20683 + ... + 22555.

It is an arithmetic number, because the mean of its divisors is an integer number (5457088).

Almost surely, 2^40492387 is an apocalyptic number.

40492387 is a deficient number, since it is larger than the sum of its proper divisors (3164317).

40492387 is a wasteful number, since it uses less digits than its factorization.

40492387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3549.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 40492387 is about 6363.3628687982. The cubic root of 40492387 is about 343.3927536163.

The spelling of 40492387 in words is "forty million, four hundred ninety-two thousand, three hundred eighty-seven".