60399999 has 20 divisors (see below), whose sum is σ = 98431080. Its totient is φ = 36605520.

The previous prime is 60399991. The next prime is 60400007. The reversal of 60399999 is 99999306.

It is an interprime number because it is at equal distance from previous prime (60399991) and next prime (60400007).

It is not a de Polignac number, because 60399999 - 2³ = 60399991 is a prime.

60399999 is a modest number, since divided by 9999 gives 6039 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (60399991) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 33004 + ... + 34785.

It is an arithmetic number, because the mean of its divisors is an integer number (4921554).

Almost surely, 2^60399999 is an apocalyptic number.

60399999 is a deficient number, since it is larger than the sum of its proper divisors (38031081).

60399999 is a wasteful number, since it uses less digits than its factorization.

60399999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67812 (or 67803 counting only the distinct ones).

The product of its (nonzero) digits is 1062882, while the sum is 54.

The square root of 60399999 is about 7771.7436267546. The cubic root of 60399999 is about 392.3548063991.

The spelling of 60399999 in words is "sixty million, three hundred ninety-nine thousand, nine hundred ninety-nine".