1026679949 has 2 divisors, whose sum is σ = 1026679950. Its totient is φ = 1026679948.

The previous prime is 1026679939. The next prime is 1026679961. The reversal of 1026679949 is 9499766201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 992691049 + 33988900 = 31507^2 + 5830^2 .

It is a cyclic number.

It is not a de Polignac number, because 1026679949 - 2²⁸ = 758244493 is a prime.

It is a super-4 number, since 4×1026679949⁴ (a number of 37 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1026679949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1026679939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 513339974 + 513339975.

It is an arithmetic number, because the mean of its divisors is an integer number (513339975).

Almost surely, 2^1026679949 is an apocalyptic number.

It is an amenable number.

1026679949 is a deficient number, since it is larger than the sum of its proper divisors (1).

1026679949 is an equidigital number, since it uses as much as digits as its factorization.

1026679949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1469664, while the sum is 53.

The square root of 1026679949 is about 32041.8468412793. The cubic root of 1026679949 is about 1008.8153771095.

The spelling of 1026679949 in words is "one billion, twenty-six million, six hundred seventy-nine thousand, nine hundred forty-nine".