63439077 has 16 divisors (see below), whose sum is σ = 91445760. Its totient is φ = 38887872.

The previous prime is 63439073. The next prime is 63439091. The reversal of 63439077 is 77093436.

It is not a de Polignac number, because 63439077 - 2² = 63439073 is a prime.

It is a super-2 number, since 2×63439077² = 8049032981223858, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63439073) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7468 + ... + 13514.

It is an arithmetic number, because the mean of its divisors is an integer number (5715360).

Almost surely, 2^63439077 is an apocalyptic number.

It is an amenable number.

63439077 is a deficient number, since it is larger than the sum of its proper divisors (28006683).

63439077 is a wasteful number, since it uses less digits than its factorization.

63439077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6332.

The product of its (nonzero) digits is 95256, while the sum is 39.

The square root of 63439077 is about 7964.8651589340. The cubic root of 63439077 is about 398.8279796917.

The spelling of 63439077 in words is "sixty-three million, four hundred thirty-nine thousand, seventy-seven".