387434757 has 16 divisors (see below), whose sum is σ = 545218560. Its totient is φ = 244042992.

The previous prime is 387434753. The next prime is 387434759. The reversal of 387434757 is 757434783.

It is not a de Polignac number, because 387434757 - 2² = 387434753 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387434753) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12958 + ... + 30704.

It is an arithmetic number, because the mean of its divisors is an integer number (34076160).

Almost surely, 2^387434757 is an apocalyptic number.

It is an amenable number.

387434757 is a deficient number, since it is larger than the sum of its proper divisors (157783803).

387434757 is a wasteful number, since it uses less digits than its factorization.

387434757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18152.

The product of its digits is 1975680, while the sum is 48.

The square root of 387434757 is about 19683.3624414123. The cubic root of 387434757 is about 729.0089491432.

The spelling of 387434757 in words is "three hundred eighty-seven million, four hundred thirty-four thousand, seven hundred fifty-seven".