90405434419 has 8 divisors (see below), whose sum is σ = 90867208640. Its totient is φ = 89944603200.

The previous prime is 90405434401. The next prime is 90405434423. The reversal of 90405434419 is 91443450409.

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 90405434419 - 2¹⁹ = 90404910131 is a prime.

It is a super-2 number, since 2×90405434419² (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 (90405434429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43122 + ... + 427399.

It is an arithmetic number, because the mean of its divisors is an integer number (11358401080).

Almost surely, 2^90405434419 is an apocalyptic number.

90405434419 is a deficient number, since it is larger than the sum of its proper divisors (461774221).

90405434419 is a wasteful number, since it uses less digits than its factorization.

90405434419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471501.

The product of its (nonzero) digits is 311040, while the sum is 43.

The spelling of 90405434419 in words is "ninety billion, four hundred five million, four hundred thirty-four thousand, four hundred nineteen".