29979453254 has 4 divisors (see below), whose sum is σ = 44969179884. Its totient is φ = 14989726626.

The previous prime is 29979453253. The next prime is 29979453263. The reversal of 29979453254 is 45235497992.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 29979453193 and 29979453202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29979453253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7494863312 + ... + 7494863315.

It is an arithmetic number, because the mean of its divisors is an integer number (11242294971).

Almost surely, 2^29979453254 is an apocalyptic number.

29979453254 is a deficient number, since it is larger than the sum of its proper divisors (14989726630).

29979453254 is a wasteful number, since it uses less digits than its factorization.

29979453254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14989726629.

The product of its digits is 24494400, while the sum is 59.

The spelling of 29979453254 in words is "twenty-nine billion, nine hundred seventy-nine million, four hundred fifty-three thousand, two hundred fifty-four".