139690054 has 16 divisors (see below), whose sum is σ = 253555488. Its totient is φ = 56345472.

The previous prime is 139690051. The next prime is 139690087. The reversal of 139690054 is 450096931.

It is a super-2 number, since 2×139690054² = 39026622373045832, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 139689995 and 139690022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139690051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 293229 + ... + 293704.

It is an arithmetic number, because the mean of its divisors is an integer number (15847218).

Almost surely, 2^139690054 is an apocalyptic number.

139690054 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

139690054 is a deficient number, since it is larger than the sum of its proper divisors (113865434).

139690054 is a wasteful number, since it uses less digits than its factorization.

139690054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586959.

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 139690054 is about 11819.0546999326. The cubic root of 139690054 is about 518.8659382999.

The spelling of 139690054 in words is "one hundred thirty-nine million, six hundred ninety thousand, fifty-four".