139260006 has 32 divisors (see below), whose sum is σ = 325756800. Its totient is φ = 43976520.

The previous prime is 139259999. The next prime is 139260007. The reversal of 139260006 is 600062931.

It is a happy number.

It is a super-2 number, since 2×139260006² = 38786698542240072, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139260007) 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, 66840 + ... + 68891.

It is an arithmetic number, because the mean of its divisors is an integer number (10179900).

Almost surely, 2^139260006 is an apocalyptic number.

139260006 is an abundant number, since it is smaller than the sum of its proper divisors (186496794).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139260006 is a wasteful number, since it uses less digits than its factorization.

139260006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135761 (or 135755 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 139260006 is about 11800.8476814168. The cubic root of 139260006 is about 518.3329329604.

The spelling of 139260006 in words is "one hundred thirty-nine million, two hundred sixty thousand, six".