739949321 has 4 divisors (see below), whose sum is σ = 744662532. Its totient is φ = 735236112.

The previous prime is 739949251. The next prime is 739949333. The reversal of 739949321 is 123949937.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 510760000 + 229189321 = 22600^2 + 15139^2 .

It is a cyclic number.

It is not a de Polignac number, because 739949321 - 2²⁶ = 672840457 is a prime.

It is a super-2 number, since 2×739949321² = 1095049995296722082, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (739949921) 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, 2356370 + ... + 2356683.

It is an arithmetic number, because the mean of its divisors is an integer number (186165633).

Almost surely, 2^739949321 is an apocalyptic number.

It is an amenable number.

739949321 is a deficient number, since it is larger than the sum of its proper divisors (4713211).

739949321 is a wasteful number, since it uses less digits than its factorization.

739949321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4713210.

The product of its digits is 367416, while the sum is 47.

The square root of 739949321 is about 27202.0095029761. The cubic root of 739949321 is about 904.4835208162.

The spelling of 739949321 in words is "seven hundred thirty-nine million, nine hundred forty-nine thousand, three hundred twenty-one".