380723987 has 4 divisors (see below), whose sum is σ = 435113136. Its totient is φ = 326334840.

The previous prime is 380723971. The next prime is 380723999. The reversal of 380723987 is 789327083.

It is a happy number.

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 380723987 - 2⁴ = 380723971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (380722987) 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, 27194564 + ... + 27194577.

It is an arithmetic number, because the mean of its divisors is an integer number (108778284).

Almost surely, 2^380723987 is an apocalyptic number.

380723987 is a deficient number, since it is larger than the sum of its proper divisors (54389149).

380723987 is an equidigital number, since it uses as much as digits as its factorization.

380723987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54389148.

The product of its (nonzero) digits is 508032, while the sum is 47.

The square root of 380723987 is about 19512.1497277978. The cubic root of 380723987 is about 724.7753482315.

The spelling of 380723987 in words is "three hundred eighty million, seven hundred twenty-three thousand, nine hundred eighty-seven".