40869345 has 16 divisors (see below), whose sum is σ = 71335872. Its totient is φ = 19815360.

The previous prime is 40869341. The next prime is 40869371. The reversal of 40869345 is 54396804.

It is not a de Polignac number, because 40869345 - 2² = 40869341 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40869341) 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, 123682 + ... + 124011.

It is an arithmetic number, because the mean of its divisors is an integer number (4458492).

Almost surely, 2^40869345 is an apocalyptic number.

It is an amenable number.

40869345 is a deficient number, since it is larger than the sum of its proper divisors (30466527).

40869345 is a wasteful number, since it uses less digits than its factorization.

40869345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247712.

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 40869345 is about 6392.9136549777. The cubic root of 40869345 is about 344.4550522998.

It can be divided in two parts, 40869 and 345, that added together give a palindrome (41214).

The spelling of 40869345 in words is "forty million, eight hundred sixty-nine thousand, three hundred forty-five".