61049989 has 32 divisors (see below), whose sum is σ = 83220480. Its totient is φ = 43243200.

The previous prime is 61049929. The next prime is 61049999. The reversal of 61049989 is 98994016.

It is not a de Polignac number, because 61049989 - 2⁹ = 61049477 is a prime.

It is a zygodrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61049929) 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, 70642 + ... + 71500.

It is an arithmetic number, because the mean of its divisors is an integer number (2600640).

Almost surely, 2^61049989 is an apocalyptic number.

It is an amenable number.

61049989 is a deficient number, since it is larger than the sum of its proper divisors (22170491).

61049989 is a wasteful number, since it uses less digits than its factorization.

61049989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 961.

The product of its (nonzero) digits is 139968, while the sum is 46.

The square root of 61049989 is about 7813.4492383326. The cubic root of 61049989 is about 393.7572198559.

The spelling of 61049989 in words is "sixty-one million, forty-nine thousand, nine hundred eighty-nine".