749279091 has 8 divisors (see below), whose sum is σ = 1089860544. Its totient is φ = 454108520.

The previous prime is 749279087. The next prime is 749279137. The reversal of 749279091 is 190972947.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 749279091 - 2² = 749279087 is a prime.

It is a super-2 number, since 2×749279091² = 1122838312419572562, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 749279091.

It is not an unprimeable number, because it can be changed into a prime (749299091) 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, 11352681 + ... + 11352746.

It is an arithmetic number, because the mean of its divisors is an integer number (136232568).

Almost surely, 2^749279091 is an apocalyptic number.

749279091 is a deficient number, since it is larger than the sum of its proper divisors (340581453).

749279091 is a wasteful number, since it uses less digits than its factorization.

749279091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22705441.

The product of its (nonzero) digits is 285768, while the sum is 48.

The square root of 749279091 is about 27372.9627735107. The cubic root of 749279091 is about 908.2690967414.

The spelling of 749279091 in words is "seven hundred forty-nine million, two hundred seventy-nine thousand, ninety-one".