739490221 has 8 divisors (see below), whose sum is σ = 758947904. Its totient is φ = 720135360.

The previous prime is 739490209. The next prime is 739490237. The reversal of 739490221 is 122094937.

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

It is a 4-Lehmer number, since φ(739490221) divides (739490221-1)⁴.

It is a cyclic number.

It is not a de Polignac number, because 739490221 - 2²⁹ = 202619309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (739490201) 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, 11025 + ... + 40006.

It is an arithmetic number, because the mean of its divisors is an integer number (94868488).

Almost surely, 2^739490221 is an apocalyptic number.

It is an amenable number.

739490221 is a deficient number, since it is larger than the sum of its proper divisors (19457683).

739490221 is a wasteful number, since it uses less digits than its factorization.

739490221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51411.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 739490221 is about 27193.5694788308. The cubic root of 739490221 is about 904.2964204828.

The spelling of 739490221 in words is "seven hundred thirty-nine million, four hundred ninety thousand, two hundred twenty-one".