380408947 has 4 divisors (see below), whose sum is σ = 389687256. Its totient is φ = 371130640.

The previous prime is 380408927. The next prime is 380408957. The reversal of 380408947 is 749804083.

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 380408947 - 2²³ = 372020339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (380408927) 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, 4639093 + ... + 4639174.

It is an arithmetic number, because the mean of its divisors is an integer number (97421814).

Almost surely, 2^380408947 is an apocalyptic number.

380408947 is a deficient number, since it is larger than the sum of its proper divisors (9278309).

380408947 is an equidigital number, since it uses as much as digits as its factorization.

380408947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9278308.

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 380408947 is about 19504.0751382884. The cubic root of 380408947 is about 724.5753816393.

The spelling of 380408947 in words is "three hundred eighty million, four hundred eight thousand, nine hundred forty-seven".