389703077 has 4 divisors (see below), whose sum is σ = 402274176. Its totient is φ = 377131980.

The previous prime is 389703071. The next prime is 389703079. The reversal of 389703077 is 770307983.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-389703077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389703071) 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, 6285503 + ... + 6285564.

It is an arithmetic number, because the mean of its divisors is an integer number (100568544).

Almost surely, 2^389703077 is an apocalyptic number.

It is an amenable number.

389703077 is a deficient number, since it is larger than the sum of its proper divisors (12571099).

389703077 is a wasteful number, since it uses less digits than its factorization.

389703077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12571098.

The product of its (nonzero) digits is 222264, while the sum is 44.

The square root of 389703077 is about 19740.8985864372. The cubic root of 389703077 is about 730.4288947701.

The spelling of 389703077 in words is "three hundred eighty-nine million, seven hundred three thousand, seventy-seven".