427749403 has 2 divisors, whose sum is σ = 427749404. Its totient is φ = 427749402.

The previous prime is 427749389. The next prime is 427749419. The reversal of 427749403 is 304947724.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 427749403 - 2⁹ = 427748891 is a prime.

It is not a weakly prime, because it can be changed into another prime (427749473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213874701 + 213874702.

It is an arithmetic number, because the mean of its divisors is an integer number (213874702).

Almost surely, 2^427749403 is an apocalyptic number.

427749403 is a deficient number, since it is larger than the sum of its proper divisors (1).

427749403 is an equidigital number, since it uses as much as digits as its factorization.

427749403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 169344, while the sum is 40.

The square root of 427749403 is about 20682.1034471835. The cubic root of 427749403 is about 753.4650938814.

The spelling of 427749403 in words is "four hundred twenty-seven million, seven hundred forty-nine thousand, four hundred three".