387679481 has 4 divisors (see below), whose sum is σ = 443062272. Its totient is φ = 332296692.

The previous prime is 387679463. The next prime is 387679483. The reversal of 387679481 is 184976783.

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, and also an emirpimes, since its reverse is a distinct semiprime: 184976783 = 31 ⋅5966993.

It is not a de Polignac number, because 387679481 - 2⁶ = 387679417 is a prime.

It is a super-2 number, since 2×387679481² = 300590759976858722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (387679483) 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, 27691385 + ... + 27691398.

It is an arithmetic number, because the mean of its divisors is an integer number (110765568).

Almost surely, 2^387679481 is an apocalyptic number.

It is an amenable number.

387679481 is a deficient number, since it is larger than the sum of its proper divisors (55382791).

387679481 is an equidigital number, since it uses as much as digits as its factorization.

387679481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55382790.

The product of its digits is 2032128, while the sum is 53.

The square root of 387679481 is about 19689.5779792255. The cubic root of 387679481 is about 729.1624101948.

The spelling of 387679481 in words is "three hundred eighty-seven million, six hundred seventy-nine thousand, four hundred eighty-one".