611909379 has 12 divisors (see below), whose sum is σ = 905427432. Its totient is φ = 397989600.

The previous prime is 611909377. The next prime is 611909381. The reversal of 611909379 is 973909116.

It is an interprime number because it is at equal distance from previous prime (611909377) and next prime (611909381).

It is not a de Polignac number, because 611909379 - 2¹ = 611909377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (611909371) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 828777 + ... + 829514.

It is an arithmetic number, because the mean of its divisors is an integer number (75452286).

Almost surely, 2^611909379 is an apocalyptic number.

611909379 is a deficient number, since it is larger than the sum of its proper divisors (293518053).

611909379 is a wasteful number, since it uses less digits than its factorization.

611909379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1658338 (or 1658335 counting only the distinct ones).

The product of its (nonzero) digits is 91854, while the sum is 45.

The square root of 611909379 is about 24736.8021174929. The cubic root of 611909379 is about 848.9765670883.

The spelling of 611909379 in words is "six hundred eleven million, nine hundred nine thousand, three hundred seventy-nine".