380999745 has 72 divisors (see below), whose sum is σ = 774671040. Its totient is φ = 172710720.

The previous prime is 380999683. The next prime is 380999753. The reversal of 380999745 is 547999083.

It is not a de Polignac number, because 380999745 - 2⁶ = 380999681 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 380999691 and 380999700.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 288196 + ... + 289514.

It is an arithmetic number, because the mean of its divisors is an integer number (10759320).

Almost surely, 2^380999745 is an apocalyptic number.

380999745 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

380999745 is an abundant number, since it is smaller than the sum of its proper divisors (393671295).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

380999745 is a wasteful number, since it uses less digits than its factorization.

380999745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1475 (or 1465 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 54.

The square root of 380999745 is about 19519.2147639192. The cubic root of 380999745 is about 724.9502906861.

The spelling of 380999745 in words is "three hundred eighty million, nine hundred ninety-nine thousand, seven hundred forty-five".