40681459 has 16 divisors (see below), whose sum is σ = 53016768. Its totient is φ = 30292992.

The previous prime is 40681453. The next prime is 40681499. The reversal of 40681459 is 95418604.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 40681459 - 2⁹ = 40680947 is a prime.

It is a super-2 number, since 2×40681459² = 3309962212737362, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40681453) 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, 11602 + ... + 14695.

It is an arithmetic number, because the mean of its divisors is an integer number (3313548).

Almost surely, 2^40681459 is an apocalyptic number.

40681459 is a deficient number, since it is larger than the sum of its proper divisors (12335309).

40681459 is a wasteful number, since it uses less digits than its factorization.

40681459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26334.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 40681459 is about 6378.2018625942. The cubic root of 40681459 is about 343.9263943608.

The spelling of 40681459 in words is "forty million, six hundred eighty-one thousand, four hundred fifty-nine".