90348839 has 4 divisors (see below), whose sum is σ = 103255824. Its totient is φ = 77441856.

The previous prime is 90348799. The next prime is 90348851. The reversal of 90348839 is 93884309.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93884309 = 5669 ⋅16561.

It is a cyclic number.

It is not a de Polignac number, because 90348839 - 2²⁴ = 73571623 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90348839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90342839) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6453482 + ... + 6453495.

It is an arithmetic number, because the mean of its divisors is an integer number (25813956).

Almost surely, 2^90348839 is an apocalyptic number.

90348839 is a deficient number, since it is larger than the sum of its proper divisors (12906985).

90348839 is a wasteful number, since it uses less digits than its factorization.

90348839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12906984.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 90348839 is about 9505.2006291293. The cubic root of 90348839 is about 448.7187240354.

The spelling of 90348839 in words is "ninety million, three hundred forty-eight thousand, eight hundred thirty-nine".