139279030 has 32 divisors (see below), whose sum is σ = 285389568. Its totient is φ = 48444000.

The previous prime is 139279027. The next prime is 139279039. The reversal of 139279030 is 30972931.

139279030 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139279039) 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, 24996 + ... + 30055.

It is an arithmetic number, because the mean of its divisors is an integer number (8918424).

Almost surely, 2^139279030 is an apocalyptic number.

139279030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139279030 is an abundant number, since it is smaller than the sum of its proper divisors (146110538).

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

139279030 is a wasteful number, since it uses less digits than its factorization.

139279030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55092.

The product of its (nonzero) digits is 10206, while the sum is 34.

The square root of 139279030 is about 11801.6536976815. The cubic root of 139279030 is about 518.3565346558.

The spelling of 139279030 in words is "one hundred thirty-nine million, two hundred seventy-nine thousand, thirty".