40351445 has 4 divisors (see below), whose sum is σ = 48421740. Its totient is φ = 32281152.

The previous prime is 40351417. The next prime is 40351447. The reversal of 40351445 is 54415304.

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 24423364 + 15928081 = 4942^2 + 3991^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40351445 is a prime.

It is a super-2 number, since 2×40351445² = 3256478227176050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40351447) 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, 4035140 + ... + 4035149.

It is an arithmetic number, because the mean of its divisors is an integer number (12105435).

Almost surely, 2^40351445 is an apocalyptic number.

It is an amenable number.

40351445 is a deficient number, since it is larger than the sum of its proper divisors (8070295).

40351445 is an equidigital number, since it uses as much as digits as its factorization.

40351445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8070294.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 40351445 is about 6352.2787249931. The cubic root of 40351445 is about 342.9938743250.

Adding to 40351445 its reverse (54415304), we get a palindrome (94766749).

The spelling of 40351445 in words is "forty million, three hundred fifty-one thousand, four hundred forty-five".