59999940 has 480 divisors, whose sum is σ = 259547904. Its totient is φ = 11197440.

The previous prime is 59999917. The next prime is 59999957. The reversal of 59999940 is 4999995.

It is a happy number.

59999940 is a `hidden beast` number, since 599 + 9 + 9 + 9 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 1621602 + ... + 1621638.

Almost surely, 2^59999940 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 59999940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129773952).

59999940 is an abundant number, since it is smaller than the sum of its proper divisors (199547964).

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

59999940 is a wasteful number, since it uses less digits than its factorization.

59999940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89 (or 78 counting only the distinct ones).

The product of its (nonzero) digits is 1180980, while the sum is 54.

The square root of 59999940 is about 7745.9628194305. The cubic root of 59999940 is about 391.4866336213.

Subtracting from 59999940 its reverse (4999995), we obtain a palindrome (54999945).

It can be divided in two parts, 59 and 999940, that added together give a palindrome (999999).

The spelling of 59999940 in words is "fifty-nine million, nine hundred ninety-nine thousand, nine hundred forty".