840030747 has 8 divisors (see below), whose sum is σ = 1124728320. Its totient is φ = 557676840.

The previous prime is 840030743. The next prime is 840030773. The reversal of 840030747 is 747030048.

It is a happy number.

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

It is not a de Polignac number, because 840030747 - 2² = 840030743 is a prime.

It is not an unprimeable number, because it can be changed into a prime (840030743) 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, 585079 + ... + 586512.

It is an arithmetic number, because the mean of its divisors is an integer number (140591040).

Almost surely, 2^840030747 is an apocalyptic number.

840030747 is a deficient number, since it is larger than the sum of its proper divisors (284697573).

840030747 is a wasteful number, since it uses less digits than its factorization.

840030747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1171833.

The product of its (nonzero) digits is 18816, while the sum is 33.

The square root of 840030747 is about 28983.2839236688. The cubic root of 840030747 is about 943.5503082194.

The spelling of 840030747 in words is "eight hundred forty million, thirty thousand, seven hundred forty-seven".