612901439 has 4 divisors (see below), whose sum is σ = 613116624. Its totient is φ = 612686256.

The previous prime is 612901427. The next prime is 612901453. The reversal of 612901439 is 934109216.

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

It is a cyclic number.

It is not a de Polignac number, because 612901439 - 2²⁰ = 611852863 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 612901399 and 612901408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612901409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103262 + ... + 109035.

It is an arithmetic number, because the mean of its divisors is an integer number (153279156).

Almost surely, 2^612901439 is an apocalyptic number.

612901439 is a deficient number, since it is larger than the sum of its proper divisors (215185).

612901439 is a wasteful number, since it uses less digits than its factorization.

612901439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215184.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 612901439 is about 24756.8463056182. The cubic root of 612901439 is about 849.4351213408.

The spelling of 612901439 in words is "six hundred twelve million, nine hundred one thousand, four hundred thirty-nine".