669041429 has 8 divisors (see below), whose sum is σ = 782400960. Its totient is φ = 560127456.

The previous prime is 669041407. The next prime is 669041453. The reversal of 669041429 is 924140966.

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

It is a de Polignac number, because none of the positive numbers 2^k-669041429 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 (669041459) 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, 1111064 + ... + 1111665.

It is an arithmetic number, because the mean of its divisors is an integer number (97800120).

Almost surely, 2^669041429 is an apocalyptic number.

It is an amenable number.

669041429 is a deficient number, since it is larger than the sum of its proper divisors (113359531).

669041429 is a wasteful number, since it uses less digits than its factorization.

669041429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2222779.

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 669041429 is about 25865.8351691957. The cubic root of 669041429 is about 874.6165085209.

The spelling of 669041429 in words is "six hundred sixty-nine million, forty-one thousand, four hundred twenty-nine".