386994437 has 4 divisors (see below), whose sum is σ = 389368800. Its totient is φ = 384620076.

The previous prime is 386994407. The next prime is 386994457. The reversal of 386994437 is 734499683.

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 not a de Polignac number, because 386994437 - 2¹⁸ = 386732293 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 (386994407) 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, 1186937 + ... + 1187262.

It is an arithmetic number, because the mean of its divisors is an integer number (97342200).

Almost surely, 2^386994437 is an apocalyptic number.

It is an amenable number.

386994437 is a deficient number, since it is larger than the sum of its proper divisors (2374363).

386994437 is a wasteful number, since it uses less digits than its factorization.

386994437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2374362.

The product of its digits is 3919104, while the sum is 53.

The square root of 386994437 is about 19672.1741808068. The cubic root of 386994437 is about 728.7326713131.

The spelling of 386994437 in words is "three hundred eighty-six million, nine hundred ninety-four thousand, four hundred thirty-seven".