2079409957 has 4 divisors (see below), whose sum is σ = 2080498860. Its totient is φ = 2078321056.

The previous prime is 2079409949. The next prime is 2079409991. The reversal of 2079409957 is 7599049702.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7599049702 = 2 ⋅3799524851.

It can be written as a sum of positive squares in 2 ways, for example, as 1982564676 + 96845281 = 44526^2 + 9841^2 .

It is a cyclic number.

It is not a de Polignac number, because 2079409957 - 2³ = 2079409949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2071409957) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 541582 + ... + 545407.

It is an arithmetic number, because the mean of its divisors is an integer number (520124715).

Almost surely, 2^2079409957 is an apocalyptic number.

It is an amenable number.

2079409957 is a deficient number, since it is larger than the sum of its proper divisors (1088903).

2079409957 is a wasteful number, since it uses less digits than its factorization.

2079409957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1088902.

The product of its (nonzero) digits is 1428840, while the sum is 52.

The square root of 2079409957 is about 45600.5477708328. The cubic root of 2079409957 is about 1276.3801447674.

The spelling of 2079409957 in words is "two billion, seventy-nine million, four hundred nine thousand, nine hundred fifty-seven".