90554940 has 108 divisors (see below), whose sum is σ = 319560696. Its totient is φ = 20696256.

The previous prime is 90554939. The next prime is 90554941. The reversal of 90554940 is 4945509.

It is an interprime number because it is at equal distance from previous prime (90554939) and next prime (90554941).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 90554895 and 90554904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90554941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3687 + ... + 13953.

Almost surely, 2^90554940 is an apocalyptic number.

90554940 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90554940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159780348).

90554940 is an abundant number, since it is smaller than the sum of its proper divisors (229005756).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90554940 is a wasteful number, since it uses less digits than its factorization.

90554940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10296 (or 10284 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 90554940 is about 9516.0359394025. The cubic root of 90554940 is about 449.0596660473.

The spelling of 90554940 in words is "ninety million, five hundred fifty-four thousand, nine hundred forty".