40249453 has 2 divisors, whose sum is σ = 40249454. Its totient is φ = 40249452.

The previous prime is 40249423. The next prime is 40249459. The reversal of 40249453 is 35494204.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22297284 + 17952169 = 4722^2 + 4237^2 .

It is a cyclic number.

It is not a de Polignac number, because 40249453 - 2¹⁷ = 40118381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40249459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20124726 + 20124727.

It is an arithmetic number, because the mean of its divisors is an integer number (20124727).

Almost surely, 2^40249453 is an apocalyptic number.

It is an amenable number.

40249453 is a deficient number, since it is larger than the sum of its proper divisors (1).

40249453 is an equidigital number, since it uses as much as digits as its factorization.

40249453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 40249453 is about 6344.2456604391. The cubic root of 40249453 is about 342.7046476184.

The spelling of 40249453 in words is "forty million, two hundred forty-nine thousand, four hundred fifty-three".