46878709 has 2 divisors, whose sum is σ = 46878710. Its totient is φ = 46878708.

The previous prime is 46878691. The next prime is 46878749. The reversal of 46878709 is 90787864.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41602500 + 5276209 = 6450^2 + 2297^2 .

It is a cyclic number.

It is not a de Polignac number, because 46878709 - 2⁵ = 46878677 is a prime.

It is a super-2 number, since 2×46878709² = 4395226715013362, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (46878749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23439354 + 23439355.

It is an arithmetic number, because the mean of its divisors is an integer number (23439355).

Almost surely, 2^46878709 is an apocalyptic number.

It is an amenable number.

46878709 is a deficient number, since it is larger than the sum of its proper divisors (1).

46878709 is an equidigital number, since it uses as much as digits as its factorization.

46878709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 677376, while the sum is 49.

The square root of 46878709 is about 6846.8028305188. The cubic root of 46878709 is about 360.5719021992.

The spelling of 46878709 in words is "forty-six million, eight hundred seventy-eight thousand, seven hundred nine".