40100449 has 4 divisors (see below), whose sum is σ = 40215700. Its totient is φ = 39985200.

The previous prime is 40100441. The next prime is 40100491. The reversal of 40100449 is 94400104.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11102224 + 28998225 = 3332^2 + 5385^2 .

It is a cyclic number.

It is not a de Polignac number, because 40100449 - 2³ = 40100441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40100441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57102 + ... + 57799.

It is an arithmetic number, because the mean of its divisors is an integer number (10053925).

Almost surely, 2^40100449 is an apocalyptic number.

It is an amenable number.

40100449 is a deficient number, since it is larger than the sum of its proper divisors (115251).

40100449 is a wasteful number, since it uses less digits than its factorization.

40100449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115250.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 40100449 is about 6332.4915317748. The cubic root of 40100449 is about 342.2812256580.

It can be divided in two parts, 40 and 100449, that added together give a square (100489 = 317²).

The spelling of 40100449 in words is "forty million, one hundred thousand, four hundred forty-nine".