749658387 has 4 divisors (see below), whose sum is σ = 999544520. Its totient is φ = 499772256.

The previous prime is 749658289. The next prime is 749658397. The reversal of 749658387 is 783856947.

749658387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 783856947 = 3 ⋅261285649.

It is not a de Polignac number, because 749658387 - 2¹⁵ = 749625619 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (749658397) 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, 124943062 + ... + 124943067.

It is an arithmetic number, because the mean of its divisors is an integer number (249886130).

Almost surely, 2^749658387 is an apocalyptic number.

749658387 is a deficient number, since it is larger than the sum of its proper divisors (249886133).

749658387 is a wasteful number, since it uses less digits than its factorization.

749658387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249886132.

The product of its digits is 10160640, while the sum is 57.

The square root of 749658387 is about 27379.8901933518. The cubic root of 749658387 is about 908.4223305742.

The spelling of 749658387 in words is "seven hundred forty-nine million, six hundred fifty-eight thousand, three hundred eighty-seven".