405949629 has 8 divisors (see below), whose sum is σ = 542268832. Its totient is φ = 270131760.

The previous prime is 405949589. The next prime is 405949673. The reversal of 405949629 is 926949504.

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-405949629 is a prime.

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 (405949699) 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, 123439 + ... + 126684.

It is an arithmetic number, because the mean of its divisors is an integer number (67783604).

Almost surely, 2^405949629 is an apocalyptic number.

It is an amenable number.

405949629 is a deficient number, since it is larger than the sum of its proper divisors (136319203).

405949629 is a wasteful number, since it uses less digits than its factorization.

405949629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250667.

The product of its (nonzero) digits is 699840, while the sum is 48.

The square root of 405949629 is about 20148.1917054608. The cubic root of 405949629 is about 740.4414391927.

The spelling of 405949629 in words is "four hundred five million, nine hundred forty-nine thousand, six hundred twenty-nine".