39209742429 has 32 divisors (see below), whose sum is σ = 65032377984. Its totient is φ = 20645191680.

The previous prime is 39209742427. The next prime is 39209742449. The reversal of 39209742429 is 92424790293.

It is not a de Polignac number, because 39209742429 - 2¹ = 39209742427 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39209742427) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2680884 + ... + 2695469.

It is an arithmetic number, because the mean of its divisors is an integer number (2032261812).

Almost surely, 2^39209742429 is an apocalyptic number.

39209742429 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

39209742429 is a deficient number, since it is larger than the sum of its proper divisors (25822635555).

39209742429 is a wasteful number, since it uses less digits than its factorization.

39209742429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5376397.

The product of its (nonzero) digits is 1959552, while the sum is 51.

The spelling of 39209742429 in words is "thirty-nine billion, two hundred nine million, seven hundred forty-two thousand, four hundred twenty-nine".