380513999 has 4 divisors (see below), whose sum is σ = 380958864. Its totient is φ = 380069136.

The previous prime is 380513983. The next prime is 380514037. The reversal of 380513999 is 999315083.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 380513999 - 2⁴ = 380513983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380513599) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221147 + ... + 222860.

It is an arithmetic number, because the mean of its divisors is an integer number (95239716).

Almost surely, 2^380513999 is an apocalyptic number.

380513999 is a deficient number, since it is larger than the sum of its proper divisors (444865).

380513999 is an equidigital number, since it uses as much as digits as its factorization.

380513999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444864.

The product of its (nonzero) digits is 262440, while the sum is 47.

The square root of 380513999 is about 19506.7680306093. The cubic root of 380513999 is about 724.6420739782.

The spelling of 380513999 in words is "three hundred eighty million, five hundred thirteen thousand, nine hundred ninety-nine".