45331439 has 2 divisors, whose sum is σ = 45331440. Its totient is φ = 45331438.

The previous prime is 45331423. The next prime is 45331457. The reversal of 45331439 is 93413354.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45331439 - 2⁴ = 45331423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45331409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22665719 + 22665720.

It is an arithmetic number, because the mean of its divisors is an integer number (22665720).

Almost surely, 2^45331439 is an apocalyptic number.

45331439 is a deficient number, since it is larger than the sum of its proper divisors (1).

45331439 is an equidigital number, since it uses as much as digits as its factorization.

45331439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 32.

The square root of 45331439 is about 6732.8626155596. The cubic root of 45331439 is about 356.5604494417.

The spelling of 45331439 in words is "forty-five million, three hundred thirty-one thousand, four hundred thirty-nine".