729219969 has 16 divisors (see below), whose sum is σ = 1084818240. Its totient is φ = 484125120.

The previous prime is 729219961. The next prime is 729219977. The reversal of 729219969 is 969912927.

It is an interprime number because it is at equal distance from previous prime (729219961) and next prime (729219977).

It is not a de Polignac number, because 729219969 - 2³ = 729219961 is a prime.

It is a super-2 number, since 2×729219969² = 1063523526376721922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (729219961) 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, 49527 + ... + 62540.

It is an arithmetic number, because the mean of its divisors is an integer number (67801140).

Almost surely, 2^729219969 is an apocalyptic number.

It is an amenable number.

729219969 is a deficient number, since it is larger than the sum of its proper divisors (355598271).

729219969 is a wasteful number, since it uses less digits than its factorization.

729219969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112317 (or 112311 counting only the distinct ones).

The product of its digits is 1102248, while the sum is 54.

The square root of 729219969 is about 27004.0731927611. The cubic root of 729219969 is about 900.0905131190.

It can be divided in two parts, 7292 and 19969, that added together give a triangular number (27261 = T₂₃₃).

The spelling of 729219969 in words is "seven hundred twenty-nine million, two hundred nineteen thousand, nine hundred sixty-nine".