69990949 has 16 divisors (see below), whose sum is σ = 83030400. Its totient is φ = 57726144.

The previous prime is 69990929. The next prime is 69990953. The reversal of 69990949 is 94909996.

It is not a de Polignac number, because 69990949 - 2¹⁵ = 69958181 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 69990949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69990929) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112762 + ... + 113380.

It is an arithmetic number, because the mean of its divisors is an integer number (5189400).

Almost surely, 2^69990949 is an apocalyptic number.

It is an amenable number.

69990949 is a deficient number, since it is larger than the sum of its proper divisors (13039451).

69990949 is a wasteful number, since it uses less digits than its factorization.

69990949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1212.

The product of its (nonzero) digits is 1417176, while the sum is 55.

The square root of 69990949 is about 8366.0593471479. The cubic root of 69990949 is about 412.1107664756.

The spelling of 69990949 in words is "sixty-nine million, nine hundred ninety thousand, nine hundred forty-nine".