40140445 has 16 divisors (see below), whose sum is σ = 50863680. Its totient is φ = 30326400.

The previous prime is 40140431. The next prime is 40140461. The reversal of 40140445 is 54404104.

It is not a de Polignac number, because 40140445 - 2⁵ = 40140413 is a prime.

It is a super-2 number, since 2×40140445² = 3222510649596050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49090 + ... + 49900.

It is an arithmetic number, because the mean of its divisors is an integer number (3178980).

Almost surely, 2^40140445 is an apocalyptic number.

It is an amenable number.

40140445 is a deficient number, since it is larger than the sum of its proper divisors (10723235).

40140445 is a wasteful number, since it uses less digits than its factorization.

40140445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1356.

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 40140445 is about 6335.6487434200. The cubic root of 40140445 is about 342.3949844093.

Adding to 40140445 its reverse (54404104), we get a palindrome (94544549).

The spelling of 40140445 in words is "forty million, one hundred forty thousand, four hundred forty-five".