94138507 has 2 divisors, whose sum is σ = 94138508. Its totient is φ = 94138506.

The previous prime is 94138487. The next prime is 94138519. The reversal of 94138507 is 70583149.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-94138507 is a prime.

It is the 9703-rd Hogben number.

It is not a weakly prime, because it can be changed into another prime (94138207) by changing a digit.

It is a nontrivial repunit in base 9702.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47069253 + 47069254.

It is an arithmetic number, because the mean of its divisors is an integer number (47069254).

Almost surely, 2^94138507 is an apocalyptic number.

94138507 is a deficient number, since it is larger than the sum of its proper divisors (1).

94138507 is an equidigital number, since it uses as much as digits as its factorization.

94138507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 94138507 is about 9702.5000386498. The cubic root of 94138507 is about 454.9068069812.

It can be divided in two parts, 94 and 138507, that added together give a triangular number (138601 = T₅₂₆).

The spelling of 94138507 in words is "ninety-four million, one hundred thirty-eight thousand, five hundred seven".