416691309 has 4 divisors (see below), whose sum is σ = 555588416. Its totient is φ = 277794204.

The previous prime is 416691287. The next prime is 416691311. The reversal of 416691309 is 903196614.

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 not a de Polignac number, because 416691309 - 2²⁵ = 383136877 is a prime.

It is a super-2 number, since 2×416691309² = 347263293992266962, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (416691329) 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, 69448549 + ... + 69448554.

It is an arithmetic number, because the mean of its divisors is an integer number (138897104).

Almost surely, 2^416691309 is an apocalyptic number.

It is an amenable number.

416691309 is a deficient number, since it is larger than the sum of its proper divisors (138897107).

416691309 is a wasteful number, since it uses less digits than its factorization.

416691309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138897106.

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 416691309 is about 20413.0181256962. The cubic root of 416691309 is about 746.9155151052.

The spelling of 416691309 in words is "four hundred sixteen million, six hundred ninety-one thousand, three hundred nine".