739023121 has 4 divisors (see below), whose sum is σ = 742892544. Its totient is φ = 735153700.

The previous prime is 739023083. The next prime is 739023127. The reversal of 739023121 is 121320937.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-739023121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 739023121.

It is not an unprimeable number, because it can be changed into a prime (739023127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1934425 + ... + 1934806.

It is an arithmetic number, because the mean of its divisors is an integer number (185723136).

Almost surely, 2^739023121 is an apocalyptic number.

It is an amenable number.

739023121 is a deficient number, since it is larger than the sum of its proper divisors (3869423).

739023121 is a wasteful number, since it uses less digits than its factorization.

739023121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3869422.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 739023121 is about 27184.9796946770. The cubic root of 739023121 is about 904.1059803602.

The spelling of 739023121 in words is "seven hundred thirty-nine million, twenty-three thousand, one hundred twenty-one".