139474401 has 12 divisors (see below), whose sum is σ = 204409296. Its totient is φ = 84529720.

The previous prime is 139474399. The next prime is 139474403. The reversal of 139474401 is 104474931.

It is an interprime number because it is at equal distance from previous prime (139474399) and next prime (139474403).

It is not a de Polignac number, because 139474401 - 2¹ = 139474399 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (139474403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 191751 + ... + 192476.

It is an arithmetic number, because the mean of its divisors is an integer number (17034108).

Almost surely, 2^139474401 is an apocalyptic number.

139474401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

139474401 is a deficient number, since it is larger than the sum of its proper divisors (64934895).

139474401 is a wasteful number, since it uses less digits than its factorization.

139474401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384252 (or 384241 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 139474401 is about 11809.9280692136. The cubic root of 139474401 is about 518.5987929939.

The spelling of 139474401 in words is "one hundred thirty-nine million, four hundred seventy-four thousand, four hundred one".