426339903 has 16 divisors (see below), whose sum is σ = 620551296. Its totient is φ = 258212640.

The previous prime is 426339899. The next prime is 426339967. The reversal of 426339903 is 309933624.

It is a Cunningham number, because it is equal to 20648²-1.

It is not a de Polignac number, because 426339903 - 2² = 426339899 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426339973) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58500 + ... + 65382.

It is an arithmetic number, because the mean of its divisors is an integer number (38784456).

Almost surely, 2^426339903 is an apocalyptic number.

426339903 is a deficient number, since it is larger than the sum of its proper divisors (194211393).

426339903 is a wasteful number, since it uses less digits than its factorization.

426339903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8774.

The product of its (nonzero) digits is 104976, while the sum is 39.

The square root of 426339903 is about 20647.9999757846. Note that the first 4 decimals coincide. The cubic root of 426339903 is about 752.6365887826.

The spelling of 426339903 in words is "four hundred twenty-six million, three hundred thirty-nine thousand, nine hundred three".