384145739 has 4 divisors (see below), whose sum is σ = 384292656. Its totient is φ = 383998824.

The previous prime is 384145721. The next prime is 384145763. The reversal of 384145739 is 937541483.

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 384145739 - 2⁸ = 384145483 is a prime.

It is a super-2 number, since 2×384145739² = 295135897583712242, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 384145739.

It is not an unprimeable number, because it can be changed into a prime (384145709) 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, 69464 + ... + 74789.

It is an arithmetic number, because the mean of its divisors is an integer number (96073164).

Almost surely, 2^384145739 is an apocalyptic number.

384145739 is a deficient number, since it is larger than the sum of its proper divisors (146917).

384145739 is a wasteful number, since it uses less digits than its factorization.

384145739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146916.

The product of its digits is 362880, while the sum is 44.

The square root of 384145739 is about 19599.6361956032. The cubic root of 384145739 is about 726.9401787447.

The spelling of 384145739 in words is "three hundred eighty-four million, one hundred forty-five thousand, seven hundred thirty-nine".