139998967 has 2 divisors, whose sum is σ = 139998968. Its totient is φ = 139998966.

The previous prime is 139998857. The next prime is 139999001. The reversal of 139998967 is 769899931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 139998967 - 2²⁷ = 5781239 is a prime.

It is a super-2 number, since 2×139998967² = 39199421522134178, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139998367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69999483 + 69999484.

It is an arithmetic number, because the mean of its divisors is an integer number (69999484).

Almost surely, 2^139998967 is an apocalyptic number.

139998967 is a deficient number, since it is larger than the sum of its proper divisors (1).

139998967 is an equidigital number, since it uses as much as digits as its factorization.

139998967 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6613488, while the sum is 61.

The square root of 139998967 is about 11832.1159139015. The cubic root of 139998967 is about 519.2481330757.

The spelling of 139998967 in words is "one hundred thirty-nine million, nine hundred ninety-eight thousand, nine hundred sixty-seven".