905630349 has 8 divisors (see below), whose sum is σ = 1300392352. Its totient is φ = 557310960.

The previous prime is 905630329. The next prime is 905630381. The reversal of 905630349 is 943036509.

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

It is not a de Polignac number, because 905630349 - 2⁵ = 905630317 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 23221291 = 905630349 / (9 + 0 + 5 + 6 + 3 + 0 + 3 + 4 + 9).

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (905630329) 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, 11610607 + ... + 11610684.

It is an arithmetic number, because the mean of its divisors is an integer number (162549044).

Almost surely, 2^905630349 is an apocalyptic number.

It is an amenable number.

905630349 is a deficient number, since it is larger than the sum of its proper divisors (394762003).

905630349 is a wasteful number, since it uses less digits than its factorization.

905630349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23221307.

The product of its (nonzero) digits is 87480, while the sum is 39.

The square root of 905630349 is about 30093.6928441825. The cubic root of 905630349 is about 967.4985496309.

The spelling of 905630349 in words is "nine hundred five million, six hundred thirty thousand, three hundred forty-nine".