469985749 has 4 divisors (see below), whose sum is σ = 490419936. Its totient is φ = 449551564.

The previous prime is 469985731. The next prime is 469985777. The reversal of 469985749 is 947589964.

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 not a de Polignac number, because 469985749 - 2⁵ = 469985717 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 (469985249) 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, 10217059 + ... + 10217104.

It is an arithmetic number, because the mean of its divisors is an integer number (122604984).

Almost surely, 2^469985749 is an apocalyptic number.

It is an amenable number.

469985749 is a deficient number, since it is larger than the sum of its proper divisors (20434187).

469985749 is a wasteful number, since it uses less digits than its factorization.

469985749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20434186.

The product of its digits is 19595520, while the sum is 61.

The square root of 469985749 is about 21679.1547113812. The cubic root of 469985749 is about 777.4901514108.

The spelling of 469985749 in words is "four hundred sixty-nine million, nine hundred eighty-five thousand, seven hundred forty-nine".