139264001 has 4 divisors (see below), whose sum is σ = 139289604. Its totient is φ = 139238400.

The previous prime is 139263953. The next prime is 139264033. The reversal of 139264001 is 100462931.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 49014001 + 90250000 = 7001^2 + 9500^2 .

It is a cyclic number.

It is not a de Polignac number, because 139264001 - 2⁶ = 139263937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139204001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1040 + ... + 16721.

It is an arithmetic number, because the mean of its divisors is an integer number (34822401).

It is a Proth number, since it is equal to 2125 ⋅ 2¹⁶ + 1 and 2125 < 2¹⁶.

Almost surely, 2^139264001 is an apocalyptic number.

It is an amenable number.

139264001 is a deficient number, since it is larger than the sum of its proper divisors (25603).

139264001 is an equidigital number, since it uses as much as digits as its factorization.

139264001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25602.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 139264001 is about 11801.0169477041. The cubic root of 139264001 is about 518.3378894451.

The spelling of 139264001 in words is "one hundred thirty-nine million, two hundred sixty-four thousand, one".