499901121 has 6 divisors (see below), whose sum is σ = 722079410. Its totient is φ = 333267408.

The previous prime is 499901119. The next prime is 499901123. The reversal of 499901121 is 121109994.

It is an interprime number because it is at equal distance from previous prime (499901119) and next prime (499901123).

It can be written as a sum of positive squares in only one way, i.e., 498182400 + 1718721 = 22320^2 + 1311^2 .

It is not a de Polignac number, because 499901121 - 2¹ = 499901119 is a prime.

It is a super-2 number, since 2×499901121² = 499802261554113282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (499901123) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27772276 + ... + 27772293.

Almost surely, 2^499901121 is an apocalyptic number.

It is an amenable number.

499901121 is a deficient number, since it is larger than the sum of its proper divisors (222178289).

499901121 is a wasteful number, since it uses less digits than its factorization.

499901121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55544575 (or 55544572 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 36.

The square root of 499901121 is about 22358.4686640208. The cubic root of 499901121 is about 793.6482023253.

The spelling of 499901121 in words is "four hundred ninety-nine million, nine hundred one thousand, one hundred twenty-one".