901209730 has 16 divisors (see below), whose sum is σ = 1648771704. Its totient is φ = 354574080.

The previous prime is 901209707. The next prime is 901209731. The reversal of 901209730 is 37902109.

It can be written as a sum of positive squares in 4 ways, for example, as 625550121 + 275659609 = 25011^2 + 16603^2 .

It is a junction number, because it is equal to n+sod(n) for n = 901209692 and 901209701.

It is not an unprimeable number, because it can be changed into a prime (901209731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 738087 + ... + 739306.

Almost surely, 2^901209730 is an apocalyptic number.

901209730 is a deficient number, since it is larger than the sum of its proper divisors (747561974).

901209730 is a wasteful number, since it uses less digits than its factorization.

901209730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1477461.

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 901209730 is about 30020.1553960002. The cubic root of 901209730 is about 965.9217766618.

The spelling of 901209730 in words is "nine hundred one million, two hundred nine thousand, seven hundred thirty".