387407949 has 4 divisors (see below), whose sum is σ = 516543936. Its totient is φ = 258271964.

The previous prime is 387407939. The next prime is 387407953. The reversal of 387407949 is 949704783.

It is a happy number.

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 387407949 - 2¹¹ = 387405901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387407939) 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, 64567989 + ... + 64567994.

It is an arithmetic number, because the mean of its divisors is an integer number (129135984).

Almost surely, 2^387407949 is an apocalyptic number.

It is an amenable number.

387407949 is a deficient number, since it is larger than the sum of its proper divisors (129135987).

387407949 is a wasteful number, since it uses less digits than its factorization.

387407949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129135986.

The product of its (nonzero) digits is 1524096, while the sum is 51.

The square root of 387407949 is about 19682.6814484206. The cubic root of 387407949 is about 728.9921345077.

The spelling of 387407949 in words is "three hundred eighty-seven million, four hundred seven thousand, nine hundred forty-nine".