40237445 has 4 divisors (see below), whose sum is σ = 48284940. Its totient is φ = 32189952.

The previous prime is 40237433. The next prime is 40237501. The reversal of 40237445 is 54473204.

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 7963684 + 32273761 = 2822^2 + 5681^2 .

It is a cyclic number.

It is not a de Polignac number, because 40237445 - 2⁴ = 40237429 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4023740 + ... + 4023749.

It is an arithmetic number, because the mean of its divisors is an integer number (12071235).

Almost surely, 2^40237445 is an apocalyptic number.

It is an amenable number.

40237445 is a deficient number, since it is larger than the sum of its proper divisors (8047495).

40237445 is an equidigital number, since it uses as much as digits as its factorization.

40237445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8047494.

The product of its (nonzero) digits is 13440, while the sum is 29.

The square root of 40237445 is about 6343.2992204373. The cubic root of 40237445 is about 342.6705634557.

The spelling of 40237445 in words is "forty million, two hundred thirty-seven thousand, four hundred forty-five".