45339991 has 2 divisors, whose sum is σ = 45339992. Its totient is φ = 45339990.

The previous prime is 45339971. The next prime is 45339997. The reversal of 45339991 is 19993354.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45339991 - 2⁹ = 45339479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45339997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22669995 + 22669996.

It is an arithmetic number, because the mean of its divisors is an integer number (22669996).

Almost surely, 2^45339991 is an apocalyptic number.

45339991 is a deficient number, since it is larger than the sum of its proper divisors (1).

45339991 is an equidigital number, since it uses as much as digits as its factorization.

45339991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 131220, while the sum is 43.

The square root of 45339991 is about 6733.4976795125. The cubic root of 45339991 is about 356.5828703288.

The spelling of 45339991 in words is "forty-five million, three hundred thirty-nine thousand, nine hundred ninety-one".