740309669 has 16 divisors (see below), whose sum is σ = 817089984. Its totient is φ = 665145600.

The previous prime is 740309621. The next prime is 740309701. The reversal of 740309669 is 966903047.

It is a cyclic number.

It is not a de Polignac number, because 740309669 - 2²⁰ = 739261093 is a prime.

It is a super-2 number, since 2×740309669² = 1096116812029779122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (740309569) 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, 609707 + ... + 610919.

It is an arithmetic number, because the mean of its divisors is an integer number (51068124).

Almost surely, 2^740309669 is an apocalyptic number.

It is an amenable number.

740309669 is a deficient number, since it is larger than the sum of its proper divisors (76780315).

740309669 is a wasteful number, since it uses less digits than its factorization.

740309669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1828.

The product of its (nonzero) digits is 244944, while the sum is 44.

The square root of 740309669 is about 27208.6322515484. The cubic root of 740309669 is about 904.6303218312.

The spelling of 740309669 in words is "seven hundred forty million, three hundred nine thousand, six hundred sixty-nine".