749887387 has 4 divisors (see below), whose sum is σ = 750072960. Its totient is φ = 749701816.

The previous prime is 749887381. The next prime is 749887403. The reversal of 749887387 is 783788947.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 783788947 = 7369 ⋅106363.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-749887387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (749887381) 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, 86587 + ... + 94852.

It is an arithmetic number, because the mean of its divisors is an integer number (187518240).

Almost surely, 2^749887387 is an apocalyptic number.

749887387 is a deficient number, since it is larger than the sum of its proper divisors (185573).

749887387 is a wasteful number, since it uses less digits than its factorization.

749887387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185572.

The product of its digits is 18966528, while the sum is 61.

The square root of 749887387 is about 27384.0717753953. The cubic root of 749887387 is about 908.5148204952.

The spelling of 749887387 in words is "seven hundred forty-nine million, eight hundred eighty-seven thousand, three hundred eighty-seven".