90470 has 16 divisors (see below), whose sum is σ = 166320. Its totient is φ = 35424.

The previous prime is 90469. The next prime is 90473. The reversal of 90470 is 7409.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90473) 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, 776 + ... + 884.

It is an arithmetic number, because the mean of its divisors is an integer number (10395).

2⁹⁰⁴⁷⁰ is an apocalyptic number.

90470 is a deficient number, since it is larger than the sum of its proper divisors (75850).

90470 is a wasteful number, since it uses less digits than its factorization.

90470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 90470 is about 300.7823133098. The cubic root of 90470 is about 44.8919217018.

Adding to 90470 its reverse (7409), we get a palindrome (97879).

The spelling of 90470 in words is "ninety thousand, four hundred seventy".