15379945 has 8 divisors (see below), whose sum is σ = 21092544. Its totient is φ = 10546224.

The previous prime is 15379927. The next prime is 15379967. The reversal of 15379945 is 54997351.

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

It is a cyclic number.

It is not a de Polignac number, because 15379945 - 2⁵ = 15379913 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219679 + ... + 219748.

It is an arithmetic number, because the mean of its divisors is an integer number (2636568).

Almost surely, 2^15379945 is an apocalyptic number.

It is an amenable number.

15379945 is a deficient number, since it is larger than the sum of its proper divisors (5712599).

15379945 is an equidigital number, since it uses as much as digits as its factorization.

15379945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439439.

The product of its digits is 170100, while the sum is 43.

The square root of 15379945 is about 3921.7272980155. The cubic root of 15379945 is about 248.6861472598.

The spelling of 15379945 in words is "fifteen million, three hundred seventy-nine thousand, nine hundred forty-five".