387091349 has 6 divisors (see below), whose sum is σ = 391497570. Its totient is φ = 382734176.

The previous prime is 387091337. The next prime is 387091399. The reversal of 387091349 is 943190783.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 2656900 + 384434449 = 1630^2 + 19607^2 .

It is not a de Polignac number, because 387091349 - 2¹⁶ = 387025813 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 (387091319) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16514 + ... + 32355.

It is an arithmetic number, because the mean of its divisors is an integer number (65249595).

Almost surely, 2^387091349 is an apocalyptic number.

It is an amenable number.

387091349 is a deficient number, since it is larger than the sum of its proper divisors (4406221).

387091349 is an frugal number, since it uses more digits than its factorization.

387091349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49047 (or 48958 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 387091349 is about 19674.6372012294. The cubic root of 387091349 is about 728.7934965167.

The spelling of 387091349 in words is "three hundred eighty-seven million, ninety-one thousand, three hundred forty-nine".