549389901 has 16 divisors (see below), whose sum is σ = 776084544. Its totient is φ = 344504064.

The previous prime is 549389879. The next prime is 549389923. The reversal of 549389901 is 109983945.

It is an interprime number because it is at equal distance from previous prime (549389879) and next prime (549389923).

It is not a de Polignac number, because 549389901 - 2⁶ = 549389837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549389941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148986 + ... + 152628.

It is an arithmetic number, because the mean of its divisors is an integer number (48505284).

Almost surely, 2^549389901 is an apocalyptic number.

549389901 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

549389901 is a deficient number, since it is larger than the sum of its proper divisors (226694643).

549389901 is a wasteful number, since it uses less digits than its factorization.

549389901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6620.

The product of its (nonzero) digits is 349920, while the sum is 48.

The square root of 549389901 is about 23439.0678355604. The cubic root of 549389901 is about 819.0182087636.

The spelling of 549389901 in words is "five hundred forty-nine million, three hundred eighty-nine thousand, nine hundred one".