40191459 has 32 divisors (see below), whose sum is σ = 67170816. Its totient is φ = 20766720.

The previous prime is 40191457. The next prime is 40191499. The reversal of 40191459 is 95419104.

40191459 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40191459 - 2¹ = 40191457 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (40191457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59029 + ... + 59705.

It is an arithmetic number, because the mean of its divisors is an integer number (2099088).

Almost surely, 2^40191459 is an apocalyptic number.

40191459 is a deficient number, since it is larger than the sum of its proper divisors (26979357).

40191459 is a wasteful number, since it uses less digits than its factorization.

40191459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 40191459 is about 6339.6734143014. The cubic root of 40191459 is about 342.5399715368.

The spelling of 40191459 in words is "forty million, one hundred ninety-one thousand, four hundred fifty-nine".