90472819369 has 3 divisors (see below), whose sum is σ = 90473120157. Its totient is φ = 90472518582.

The previous prime is 90472819309. The next prime is 90472819429. The reversal of 90472819369 is 96391827409.

The square root of 90472819369 is 300787.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (90472819309) and next prime (90472819429).

It is not a de Polignac number, because 90472819369 - 2²⁹ = 89935948457 is a prime.

It is a super-2 number, since 2×90472819369² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90472819309) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 150394 + ... + 451180.

It is an arithmetic number, because the mean of its divisors is an integer number (30157706719).

Almost surely, 2^90472819369 is an apocalyptic number.

90472819369 is the 300787-th square number.

90472819369 is the 150394-th centered octagonal number.

It is an amenable number.

90472819369 is a deficient number, since it is larger than the sum of its proper divisors (300788).

90472819369 is an frugal number, since it uses more digits than its factorization.

90472819369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601574 (or 300787 counting only the distinct ones).

The product of its (nonzero) digits is 5878656, while the sum is 58.

The spelling of 90472819369 in words is "ninety billion, four hundred seventy-two million, eight hundred nineteen thousand, three hundred sixty-nine".