40643097 has 16 divisors (see below), whose sum is σ = 59731392. Its totient is φ = 24376320.

The previous prime is 40643087. The next prime is 40643111. The reversal of 40643097 is 79034604.

It is not a de Polignac number, because 40643097 - 2⁸ = 40642841 is a prime.

It is a super-2 number, since 2×40643097² = 3303722667502818, which contains 22 as substring.

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 (40643017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3148 + ... + 9549.

It is an arithmetic number, because the mean of its divisors is an integer number (3733212).

Almost surely, 2^40643097 is an apocalyptic number.

It is an amenable number.

40643097 is a deficient number, since it is larger than the sum of its proper divisors (19088295).

40643097 is a wasteful number, since it uses less digits than its factorization.

40643097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12808.

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 40643097 is about 6375.1938794048. The cubic root of 40643097 is about 343.8182545678.

The spelling of 40643097 in words is "forty million, six hundred forty-three thousand, ninety-seven".