90421850437 has 8 divisors (see below), whose sum is σ = 92228943200. Its totient is φ = 88625234160.

The previous prime is 90421850399. The next prime is 90421850507. The reversal of 90421850437 is 73405812409.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90421850437 is a prime.

It is a super-2 number, since 2×90421850437² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90421850393 and 90421850402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90421650437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2601687 + ... + 2636212.

It is an arithmetic number, because the mean of its divisors is an integer number (11528617900).

Almost surely, 2^90421850437 is an apocalyptic number.

It is an amenable number.

90421850437 is a deficient number, since it is larger than the sum of its proper divisors (1807092763).

90421850437 is a wasteful number, since it uses less digits than its factorization.

90421850437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5238243.

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 90421850437 in words is "ninety billion, four hundred twenty-one million, eight hundred fifty thousand, four hundred thirty-seven".