90045407 has 2 divisors, whose sum is σ = 90045408. Its totient is φ = 90045406.

The previous prime is 90045367. The next prime is 90045419. The reversal of 90045407 is 70454009.

It is a strong prime.

It is an emirp because it is prime and its reverse (70454009) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90045407 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90045407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90545407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45022703 + 45022704.

It is an arithmetic number, because the mean of its divisors is an integer number (45022704).

Almost surely, 2^90045407 is an apocalyptic number.

90045407 is a deficient number, since it is larger than the sum of its proper divisors (1).

90045407 is an equidigital number, since it uses as much as digits as its factorization.

90045407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 90045407 is about 9489.2258377594. The cubic root of 90045407 is about 448.2158275941.

The spelling of 90045407 in words is "ninety million, forty-five thousand, four hundred seven".