64129459 has 2 divisors, whose sum is σ = 64129460. Its totient is φ = 64129458.

The previous prime is 64129447. The next prime is 64129463. The reversal of 64129459 is 95492146.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64129459 is a prime.

It is a super-2 number, since 2×64129459² = 8225175023265362, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (64129409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32064729 + 32064730.

It is an arithmetic number, because the mean of its divisors is an integer number (32064730).

Almost surely, 2^64129459 is an apocalyptic number.

64129459 is a deficient number, since it is larger than the sum of its proper divisors (1).

64129459 is an equidigital number, since it uses as much as digits as its factorization.

64129459 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 40.

The square root of 64129459 is about 8008.0870999259. The cubic root of 64129459 is about 400.2695246004.

The spelling of 64129459 in words is "sixty-four million, one hundred twenty-nine thousand, four hundred fifty-nine".