15413993 has 8 divisors (see below), whose sum is σ = 18223680. Its totient is φ = 12756240.

The previous prime is 15413987. The next prime is 15414001. The reversal of 15413993 is 39931451.

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

It is not a de Polignac number, because 15413993 - 2⁴ = 15413977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15413093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37763 + ... + 38168.

It is an arithmetic number, because the mean of its divisors is an integer number (2277960).

Almost surely, 2^15413993 is an apocalyptic number.

It is an amenable number.

15413993 is a deficient number, since it is larger than the sum of its proper divisors (2809687).

15413993 is an equidigital number, since it uses as much as digits as its factorization.

15413993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75967.

The product of its digits is 14580, while the sum is 35.

The square root of 15413993 is about 3926.0658425452. The cubic root of 15413993 is about 248.8695251449.

The spelling of 15413993 in words is "fifteen million, four hundred thirteen thousand, nine hundred ninety-three".