380555939 has 4 divisors (see below), whose sum is σ = 382658640. Its totient is φ = 378453240.

The previous prime is 380555887. The next prime is 380555963. The reversal of 380555939 is 939555083.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 939555083 = 23 ⋅40850221.

It is a cyclic number.

It is not a de Polignac number, because 380555939 - 2⁸ = 380555683 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 380555893 and 380555902.

It is not an unprimeable number, because it can be changed into a prime (380555239) 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, 1051079 + ... + 1051440.

It is an arithmetic number, because the mean of its divisors is an integer number (95664660).

Almost surely, 2^380555939 is an apocalyptic number.

380555939 is a deficient number, since it is larger than the sum of its proper divisors (2102701).

380555939 is a wasteful number, since it uses less digits than its factorization.

380555939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2102700.

The product of its (nonzero) digits is 729000, while the sum is 47.

The square root of 380555939 is about 19507.8430124912. The cubic root of 380555939 is about 724.6686961893.

The spelling of 380555939 in words is "three hundred eighty million, five hundred fifty-five thousand, nine hundred thirty-nine".