61929799 has 2 divisors, whose sum is σ = 61929800. Its totient is φ = 61929798.

The previous prime is 61929787. The next prime is 61929839. The reversal of 61929799 is 99792916.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61929799 - 2¹⁷ = 61798727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61929709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30964899 + 30964900.

It is an arithmetic number, because the mean of its divisors is an integer number (30964900).

Almost surely, 2^61929799 is an apocalyptic number.

61929799 is a deficient number, since it is larger than the sum of its proper divisors (1).

61929799 is an equidigital number, since it uses as much as digits as its factorization.

61929799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 551124, while the sum is 52.

The square root of 61929799 is about 7869.5488434852. The cubic root of 61929799 is about 395.6397239349.

The spelling of 61929799 in words is "sixty-one million, nine hundred twenty-nine thousand, seven hundred ninety-nine".