749678919 has 8 divisors (see below), whose sum is σ = 1090442112. Its totient is φ = 454350840.

The previous prime is 749678893. The next prime is 749678927. The reversal of 749678919 is 919876947.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 749678919 - 2⁵ = 749678887 is a prime.

It is a super-2 number, since 2×749678919² = 1124036963186017122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (749678929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11358739 + ... + 11358804.

It is an arithmetic number, because the mean of its divisors is an integer number (136305264).

Almost surely, 2^749678919 is an apocalyptic number.

749678919 is a deficient number, since it is larger than the sum of its proper divisors (340763193).

749678919 is a wasteful number, since it uses less digits than its factorization.

749678919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22717557.

The product of its digits is 6858432, while the sum is 60.

The square root of 749678919 is about 27380.2651375037. The cubic root of 749678919 is about 908.4306239326.

The spelling of 749678919 in words is "seven hundred forty-nine million, six hundred seventy-eight thousand, nine hundred nineteen".