94497840 has 120 divisors (see below), whose sum is σ = 329176848. Its totient is φ = 25194240.

The previous prime is 94497839. The next prime is 94497847. The reversal of 94497840 is 4879449.

It is a Cunningham number, because it is equal to 9721²-1.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (94497847) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17010 + ... + 21870.

Almost surely, 2^94497840 is an apocalyptic number.

94497840 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 94497840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164588424).

94497840 is an abundant number, since it is smaller than the sum of its proper divisors (234679008).

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

94497840 is a wasteful number, since it uses less digits than its factorization.

94497840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4889 (or 4871 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 94497840 is about 9720.9999485650. Note that the first 4 decimals coincide. The cubic root of 94497840 is about 455.4848753675.

The spelling of 94497840 in words is "ninety-four million, four hundred ninety-seven thousand, eight hundred forty".