749097321 has 16 divisors (see below), whose sum is σ = 1145524224. Its totient is φ = 426539664.

The previous prime is 749097313. The next prime is 749097359. The reversal of 749097321 is 123790947.

It is not a de Polignac number, because 749097321 - 2³ = 749097313 is a prime.

It is a super-2 number, since 2×749097321² = 1122293592658754082, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (749097121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57081 + ... + 68966.

It is an arithmetic number, because the mean of its divisors is an integer number (71595264).

Almost surely, 2^749097321 is an apocalyptic number.

It is an amenable number.

749097321 is a deficient number, since it is larger than the sum of its proper divisors (396426903).

749097321 is a wasteful number, since it uses less digits than its factorization.

749097321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126340.

The product of its (nonzero) digits is 95256, while the sum is 42.

The square root of 749097321 is about 27369.6423250287. The cubic root of 749097321 is about 908.1956441708.

The spelling of 749097321 in words is "seven hundred forty-nine million, ninety-seven thousand, three hundred twenty-one".