699377629949 has 2 divisors, whose sum is σ = 699377629950. Its totient is φ = 699377629948.

The previous prime is 699377629921. The next prime is 699377629957. The reversal of 699377629949 is 949926773996.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 636872629849 + 62505000100 = 798043^2 + 250010^2 .

It is a cyclic number.

It is not a de Polignac number, because 699377629949 - 2⁸ = 699377629693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (699377628949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349688814974 + 349688814975.

It is an arithmetic number, because the mean of its divisors is an integer number (349688814975).

Almost surely, 2^699377629949 is an apocalyptic number.

It is an amenable number.

699377629949 is a deficient number, since it is larger than the sum of its proper divisors (1).

699377629949 is an equidigital number, since it uses as much as digits as its factorization.

699377629949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2499898464, while the sum is 80.

The spelling of 699377629949 in words is "six hundred ninety-nine billion, three hundred seventy-seven million, six hundred twenty-nine thousand, nine hundred forty-nine".