90343421 has 8 divisors (see below), whose sum is σ = 103352064. Its totient is φ = 77360400.

The previous prime is 90343411. The next prime is 90343441. The reversal of 90343421 is 12434309.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90343421 - 2¹⁴ = 90327037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90343411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1871 + ... + 13571.

It is an arithmetic number, because the mean of its divisors is an integer number (12919008).

Almost surely, 2^90343421 is an apocalyptic number.

It is an amenable number.

90343421 is a deficient number, since it is larger than the sum of its proper divisors (13008643).

90343421 is a wasteful number, since it uses less digits than its factorization.

90343421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12811.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 90343421 is about 9504.9156229816. The cubic root of 90343421 is about 448.7097543328.

The spelling of 90343421 in words is "ninety million, three hundred forty-three thousand, four hundred twenty-one".