61434979 has 2 divisors, whose sum is σ = 61434980. Its totient is φ = 61434978.

The previous prime is 61434931. The next prime is 61435043. The reversal of 61434979 is 97943416.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61434979 - 2¹³ = 61426787 is a prime.

It is not a weakly prime, because it can be changed into another prime (61434479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30717489 + 30717490.

It is an arithmetic number, because the mean of its divisors is an integer number (30717490).

Almost surely, 2^61434979 is an apocalyptic number.

61434979 is a deficient number, since it is larger than the sum of its proper divisors (1).

61434979 is an equidigital number, since it uses as much as digits as its factorization.

61434979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 43.

The square root of 61434979 is about 7838.0468868207. The cubic root of 61434979 is about 394.5831825976.

The spelling of 61434979 in words is "sixty-one million, four hundred thirty-four thousand, nine hundred seventy-nine".