387749077 has 2 divisors, whose sum is σ = 387749078. Its totient is φ = 387749076.

The previous prime is 387749069. The next prime is 387749129. The reversal of 387749077 is 770947783.

It is an a-pointer prime, because the next prime (387749129) can be obtained adding 387749077 to its sum of digits (52).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 236975236 + 150773841 = 15394^2 + 12279^2 .

It is a cyclic number.

It is not a de Polignac number, because 387749077 - 2³ = 387749069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (387749027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193874538 + 193874539.

It is an arithmetic number, because the mean of its divisors is an integer number (193874539).

Almost surely, 2^387749077 is an apocalyptic number.

It is an amenable number.

387749077 is a deficient number, since it is larger than the sum of its proper divisors (1).

387749077 is an equidigital number, since it uses as much as digits as its factorization.

387749077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2074464, while the sum is 52.

The square root of 387749077 is about 19691.3452308368. The cubic root of 387749077 is about 729.2060405245.

The spelling of 387749077 in words is "three hundred eighty-seven million, seven hundred forty-nine thousand, seventy-seven".