893923139 has 2 divisors, whose sum is σ = 893923140. Its totient is φ = 893923138.

The previous prime is 893923073. The next prime is 893923159. The reversal of 893923139 is 931329398.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 893923139 - 2¹² = 893919043 is a prime.

It is a super-2 number, since 2×893923139² = 1598197156879226642, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 893923093 and 893923102.

It is not a weakly prime, because it can be changed into another prime (893923159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 446961569 + 446961570.

It is an arithmetic number, because the mean of its divisors is an integer number (446961570).

Almost surely, 2^893923139 is an apocalyptic number.

893923139 is a deficient number, since it is larger than the sum of its proper divisors (1).

893923139 is an equidigital number, since it uses as much as digits as its factorization.

893923139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 314928, while the sum is 47.

The square root of 893923139 is about 29898.5474396333. The cubic root of 893923139 is about 963.3114588036.

The spelling of 893923139 in words is "eight hundred ninety-three million, nine hundred twenty-three thousand, one hundred thirty-nine".