427521093 has 16 divisors (see below), whose sum is σ = 602105856. Its totient is φ = 269403120.

The previous prime is 427521091. The next prime is 427521097. The reversal of 427521093 is 390125724.

It is not a de Polignac number, because 427521093 - 2¹ = 427521091 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427521091) 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, 49455 + ... + 57452.

It is an arithmetic number, because the mean of its divisors is an integer number (37631616).

Almost surely, 2^427521093 is an apocalyptic number.

427521093 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

It is an amenable number.

427521093 is a deficient number, since it is larger than the sum of its proper divisors (174584763).

427521093 is a wasteful number, since it uses less digits than its factorization.

427521093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106984.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 427521093 is about 20676.5832041950. The cubic root of 427521093 is about 753.3310167566.

The spelling of 427521093 in words is "four hundred twenty-seven million, five hundred twenty-one thousand, ninety-three".