9423990 has 24 divisors (see below), whose sum is σ = 24502608. Its totient is φ = 2513040.

The previous prime is 9423971. The next prime is 9423991. The reversal of 9423990 is 993249.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9423991) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52266 + ... + 52445.

It is an arithmetic number, because the mean of its divisors is an integer number (1020942).

Almost surely, 2^9423990 is an apocalyptic number.

9423990 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

9423990 is an abundant number, since it is smaller than the sum of its proper divisors (15078618).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9423990 is a wasteful number, since it uses less digits than its factorization.

9423990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104724 (or 104721 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 9423990 is about 3069.8517879533. The cubic root of 9423990 is about 211.2248152230.

The spelling of 9423990 in words is "nine million, four hundred twenty-three thousand, nine hundred ninety".