61399299 has 8 divisors (see below), whose sum is σ = 88163152. Its totient is φ = 37784160.

The previous prime is 61399277. The next prime is 61399301. The reversal of 61399299 is 99299316.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61399299 - 2⁷ = 61399171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61399199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 787132 + ... + 787209.

It is an arithmetic number, because the mean of its divisors is an integer number (11020394).

Almost surely, 2^61399299 is an apocalyptic number.

61399299 is a deficient number, since it is larger than the sum of its proper divisors (26763853).

61399299 is a wasteful number, since it uses less digits than its factorization.

61399299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1574357.

The product of its digits is 236196, while the sum is 48.

The square root of 61399299 is about 7835.7704790276. The cubic root of 61399299 is about 394.5067795745.

The spelling of 61399299 in words is "sixty-one million, three hundred ninety-nine thousand, two hundred ninety-nine".